Tomorrow, the 7th (Sunday), the cold will ease and it will be sunny mainly on the Pacific side of western and eastern Japan. Be careful of rain and thunderstorms on the Sea of ??Japan side of northern Japan and Hokuriku.

2025/12/06 20:21

Tomorrow, the 7th (Sunday), a trough of atmospheric pressure will pass through northern Japan, and eastern and western Japan will be covered in high pressure. Warm air will more easily flow from the high pressure system in the south to the low pressure system in the north, so the cold will ease in many places, and temperatures are likely to be higher than normal.



Western and eastern Japan will be stable and sunny, mainly on the Pacific side. However, the air tends to dry out, so care must be taken when handling sources of fire. Use lip balm, hand cream, etc. to prevent dry skin.



Atmospheric conditions will be unstable in northern Japan and Hokuriku due to a trough in atmospheric pressure. In Hokkaido and the Tohoku region on the Sea of Japan side, rain will start and stop, and there will likely be some places in Niigata and Ishikawa prefectures where rain clouds will form. The predicted probability of lightning strikes is particularly high on the Sea of Japan side of the Tohoku region, where thunderclouds are likely to develop. Please be aware of changes in the sky, as there may be thunderstorms, tornadoes, severe gusts of wind, and hail.

Also, many places are expected to experience rain instead of snow, such as the flatlands of Hokkaido and the mountains of Tohoku. In areas with heavy snowfall, the risk of avalanches and falling snow increases, so please be careful.

Saturdays, Sundays, and winter weather in many places. [Good days for cleaning] What are the recommended spring cleaning activities based on the weather

2025/12/06 12:04

The first weekend in December is covered by high pressure, and many places are sunny.

After this, western and eastern Japan will be covered by an anticyclone, and mild winter skies are expected to continue into the 7th (Sunday).

On the other hand, northern Japan is on the edge of a high-pressure system,
with the influence of moist air flowing in, leading to rain and thunderstorms in some places in the afternoon.
Even if it's sunny now, you need to be careful about sudden changes in the weather.



Due to the cold air, the cold will continue until the morning of tomorrow, the 7th (Sunday), but
from the daytime on the 7th (Sunday), the cold will ease.
The temperature in western and eastern Japan will rise to around 15-20c, and
the sun will feel warm during the day.


This weekend's weather will be relatively calm, and it won't be too cold, so it looks like it will be a perfect day for cleaning.


Did you know that this "spring cleaning" can be done more efficiently by changing the location
depending on the weather


First of all,
Recommended places for cleaning on sunny days, like this weekend on the Pacific Ocean side...



Sunny days have the advantage of low humidity, moisture evaporates quickly, and dries quickly,
making it easy to ventilate.

For this reason, cleaning the floors, ventilation of closets, and
cleaning on wet days are suitable for cleaning on sunny days.





On the other hand, cloudy days are more humid than sunny days.

When it rains, the window glass gets wet and gets dirty again even if you clean it, so
"Window cleaning" is recommended on cloudy days.

Appropriate humidity makes it easier to remove dirt.

Also, when the sky is sunny, the sunlight reflects and it becomes difficult to see the dirt on the window glass, but when the sky is cloudy, the dirt on the window glass becomes easier to see.



When it's raining, we recommend ``sweeping'' the areas that should be cleaned, taking advantage of the

moisture that prevents dust and fallen leaves from flying up
.

Also, after the rain, we recommend cleaning the balcony while it's still wet.

Tonight is the last full moon of the year!!Cold moon.What's the weather like tonight

2025/12/05 16:00

Today, the 5th (Friday), is the last full moon of the year.
December's full moon is called the "cold moon." It is said that Native Americans gave each full moon a name to use as a guide for farming and hunting, and December came to be called the ``cold moon'' because it appears during a period of severe cold.



The last full moon of the year reached its full moon today, the 5th (Friday) at 8:14 am.
The sun sets in Tokyo at 4:27 p.m. and the moon rises at 4:23 p.m.

Today, the 5th (Friday), the area around Japan has a winter-like atmospheric pressure pattern.
Tonight, the continental high pressure system will advance near Japan, and the winter-like pressure pattern will gradually loosen around western Japan.

Okinawa is on the edge of a high-pressure system, so there will be a lot of clouds and showers.
However, there may be a chance to see the full moon through the clouds.
It seems like you can see the full moon perfectly in Kyushu.
The clouds will gradually clear in Shikoku and Sanyo, and there will be more places where you can observe them.
In the San'in region and northern Kinki region, the rain and snow will gradually stop, and there may be a chance to see the full moon late at night.
The Pacific Ocean, from the southern Kinki region to the southern Tohoku region, will have clear skies and be able to enjoy the last full moon of the year.
The area of rain and snow in Hokuriku is expected to gradually narrow down, but clouds are likely to remain.
The Sea of Japan side of southern Tohoku, the northern part of Tohoku, and the Sea of Japan side of Hokkaido will experience snow and rain, making the sky unfavorable for observing the full moon.
On the Pacific side of Hokkaido, the sky is clearer at the beginning of the night, so the chances of observing it are likely to be high.



Tonight, the temperature will drop to around 5c even in the flatlands of western and eastern Japan, so when enjoying the full moon outdoors, please be sure to take precautions against the cold, such as down coats, scarves, and gloves.
Also, there are places where there is snow or frozen roads, so please be careful where you step.

After a sudden change from the intense cold, the Pacific side continues to be sunny and dry. What will be the next stormy weather [Weekly weather]

2025/12/05 12:12

Due to the arrival of the strongest cold air of the season,
heavy snow fell from the night of December 3rd (Wednesday) the day before yesterday to yesterday, December 4th (Thursday), mainly on the Sea of Japan side.



Looking at the snowfall amount for the 48 hours up to 10 a.m. today, the 5th (Friday),

Hinoedagi Village, Fukushima Prefecture Hinoedagi 66cm
Uonuma City, Niigata Prefecture Shumon 60cm
Aomori City Sukayu 57cm
Shirakawa Village, Gifu Prefecture Shirakawa 47cm
Daisen Town, Tottori Prefecture The snowfall amount was 21cm
, and the amount of snowfall increased mainly along the mountains from northern Japan to western Japan.

Today (Friday), a winter-like atmospheric pressure pattern will continue mainly in northern Japan, but
the strong cold air in the upper atmosphere will gradually dissipate, so the snow and rain in northern Japan and Hokuriku are expected to gradually stop in the afternoon.

On the other hand, the Pacific side of western and eastern Japan is likely to be sunny and sunny.

Although the temperature will be higher than yesterday, the cold will continue, so
Please stay warm today.



Tomorrow and the day after Saturday and Sunday, a band of high pressure systems is expected to pass around Honshu one after another.

As a result, it will be sunny across the Pacific Ocean, and many places on the Sea of Japan side, such as the Sanin and Hokuriku regions, will also be sunny.

Meanwhile, in northern Japan, rain will begin to fall from the Japan Sea side from the evening of the 6th (Saturday) due to the moist air around the edges of the high pressure system and the approach of the low pressure system.

On the 7th (Sunday), it seems likely that there will be rain not only on the Sea of Japan side of northern Japan, but also
on the Pacific side.

The cold air will be receding on Saturday and Sunday, so most of what will fall will be rain rather than snow.



Looking at the weekly weather, we see that in northern Japan, low pressure systems and fronts approach periodically
There are periods of rain and snow, but
western and eastern Japan are on the path of high pressure, making it difficult for strong cold air to flow into the area.

It will continue to be sunny, especially on the Pacific side, and the air will continue to be parched and dry.

Be careful when handling fire and keep your skin and throat moisturized.




Looking at the weekly forecast with an eye on the temperature, the cold will continue until the morning of the 7th (Sunday).

From the middle of the day on the 7th, the cold will ease up and the sun will feel warm.

Although there are some daily differences in temperature,
there will be many days that will be ``small spring weather'' into next week.

Although snow, rain, and wind will temporarily increase in northern Japan around the 9th (Tuesday),
the next widespread change in weather is likely to occur next weekend around the 13th (Saturday).

Temperatures tend to be much higher than normal in northern Japan.In eastern and western Japan, areas closer to the Pacific Ocean tend to have less rainfall (weather summary from November 23, 2025 to November 29, 2025)

2025/12/05 06:38

This is a summary of the weather for this period (November 23, 2025 to November 29, 2025).

# Weather summary for this period (November 23rd to November 29th)
The average temperature was above normal in many places because a low pressure system passed near northern Japan and warm air easily entered from the south. In northern Japan, temperatures in places such as Sapporo and Akita were more than 3 C higher than normal, showing a trend that was well above normal.

Precipitation was above normal in some places in northern Japan, such as Kushiro, Abashiri, and Akita, due to the effects of low pressure and fronts. Even in Hokuriku and the San'in area, there were places with higher than normal precipitation due to the effects of low pressure and cold air in the upper atmosphere. On the other hand, as areas from eastern Japan to Okinawa and Amami were easily covered by high pressure, temperatures were well below normal, especially on the Pacific side.

Sunshine hours tended to be above normal because the weather was easily covered by high pressure and there were many sunny days, and there were places on the Japan Sea side of Hokkaido that were well above normal. The Pacific side of Hokkaido and the Tohoku region were susceptible to the effects of low pressure and fronts, so there were places like Kushiro and Akita where temperatures were below normal.



#Characteristics of pressure distribution
On the 23rd, the area around Honshu was widely covered by a belt-shaped high pressure system. On the 24th, a low pressure system moved east-northeast east of Japan, and a front extending from the low pressure system gradually became apparent. Western Japan and eastern Japan continue to be within the area of high pressure. On the 25th, a low pressure system moved eastward through the Sea of Japan. Near the southern coast of Honshu, a new low pressure front has formed and is moving east-northeast as it develops. At 9:00 p.m., Typhoon No. 27 "Koto" occurred in the Sulu Sea in the Philippines. On the 26th, a low pressure system accompanied by a front continued to develop and moved east-northeast across the east of Japan, forming a temporary high-pressure pattern in the east near Honshu. On the 27th, the center of high pressure moved east of Japan.
Multiple low pressure systems and fronts are moving through the Sea of Japan and approaching Honshu from the west. On the 28th, a low pressure system moved eastward near Sakhalin. A new low pressure system formed on the front and passed through Honshu, gradually forming a high pressure system in the west and low pressure in the east. On the 29th, multiple low pressure systems moved north to northeast from the Sea of Okhotsk to the east of Japan. The area around Honshu was gradually covered by high pressure, and the winter-like pressure pattern loosened.

#Precipitation
On the 23rd, there were localized fronts in the Tohoku region and rain in some places in the Nansei Islands due to the influence of moist air moving to the east. On the 24th, rain fell from Tohoku to Hokuriku due to a trough in atmospheric pressure and humid air. Somewhat heavy rain was observed in Sakata City, Yamagata Prefecture, Akita, and other areas. On the 25th, a low-pressure system with cold air in the sky caused rain and thunderstorms, mainly on the Sea of Japan side, with hail and hail falling in some places. In the afternoon, cold rain fell in the Kanto region as well. On the 26th, a temporary winter-like atmospheric pressure pattern resulted in rain and snow on the Sea of Japan coast from northern Japan to Hokuriku. In Harue, Sakai City, Fukui Prefecture, 35.0 mm of precipitation was observed in 3 hours, breaking the record for November. On the 27th, due to the effects of a low pressure system and front approaching from the west, rain spread from western Japan and rained in the Kanto region at night. On the 28th, rain and thunderstorms occurred from northern Japan to Hokuriku, mainly on the Sea of Japan side, due to a front and low pressure system. Rain gradually turned to snow in Hokkaido overnight. In the early hours of the 29th, there was rain and snow in Hokkaido and Hokuriku, but high pressure gradually became dominant, and the area around Honshu became largely sunny during the day.

#Temperature
On the 23rd, as the influence of cold air diminished, temperatures rose from the Tokai to the west, with some places in Kyushu and Shikoku exceeding 20c. Announcement of autumn leaves of Japanese maple in Tokyo. On the 24th, warm air blanketed the country, and temperatures across the country were at or above normal. The highest temperature in Tokyo was 18.8c, about 3c higher than the previous day. On the 25th, cold rain fell in western and eastern Japan, with temperatures in the Kanto and Kinki regions dropping nearly 5 C from the previous day. Yellow leaves of ginkgo trees are announced in Kyoto, Osaka, etc., and autumn leaves of Japanese maple trees are announced in Toyama, Kanazawa, etc. On the 26th, sunshine reached the Kanto region, and the temperature in Tokyo was 18.6c, 6c higher than the previous day. Northern Japan and the Kinki region were affected by cold winds from the north, with the highest temperature in Sapporo reaching 7.1c. On the 27th, temperatures rose due to warm southerly winds heading toward a low pressure system. In Kamioka, Hida, Gifu Prefecture, the temperature was recorded at 17.5c, 7.5c higher than the previous day. On the 28th, daytime temperatures in eastern Japan were around 20c due to warm air. In western Japan, the wind was cold and the temperature rise was slow. On the 29th, the temperature rose to around 20 degrees Celsius in western Japan, but the rise in daytime temperatures was slow in northern Japan and the Kanto region, affected by cold air.

News of the first snow continues to arrive as the coldest air of the season moves south. In Shizuoka, the first snow falls more than 60 days earlier than last year.

2025/12/04 21:05

Near Honshu, a winter-like atmospheric pressure pattern strengthened from yesterday 3rd (Wednesday) to today 4th (Thursday), and the strongest cold air of the season moved south over Honshu. The first snow was observed in various parts of eastern and western Japan from the 3rd to the 4th, and as of 8:00 pm today, the 4th, the number of snowfalls had counted at 19 locations.

Some of the snow clouds also flowed into the Pacific Ocean, and the first snow was observed in Shizuoka, Nagoya, and other areas. With the exception of Niigata, all locations experienced their first snow at least five days earlier than last year, with Nagoya seeing its first snow 31 days earlier and Shizuoka seeing it 64 days earlier.

#3rd (Wednesday) First snow observation point
Nagoya 15 days earlier than normal and 31 days earlier than last year
Toyama Same as normal, 5 days earlier than last year
Gifu 10 days earlier than normal and 11 days earlier than last year
Hiroshima: 5 days earlier than normal, 5 days earlier than last year
Hikone: 7 days earlier than normal, 15 days earlier than last year
Niigata: 10 days later than normal, 15 days later than last year
Matsue: 4 days earlier than normal, 5 days earlier than last year
Kofu 8 days earlier than normal and 11 days earlier than last year
Fukui Same as normal and 5 days earlier than last year
Kanazawa 9 days later than normal and 5 days earlier than last year
Tottori 2 days earlier than normal and 11 days earlier than last year
Okayama 7 days earlier than normal and 14 days earlier than last year
Matsuyama 16 days earlier than normal and 36 days earlier than last year
Shizuoka 34 days earlier than normal and 64 days earlier than last year

#4th (Thursday) First snow observation point *As of 8pm
Shimonoseki 6 days earlier than normal and 18 days earlier than last year
Kyoto 7 days earlier than normal and 15 days earlier than last year
Wakayama Taira 14 days earlier than usual, 24 days earlier than last year
Utsunomiya 12 days earlier than normal, 3 days earlier than last year
Tsu 20 days earlier than normal, 36 days earlier than last year

Trend toward "warm winters and little snow" Be careful of the cold waves from Christmas to New Year! [1 month forecast]

2025/12/04 15:59

Today, December 4th (Thursday), the Japan Meteorological Agency announced the
weather outlook (one month forecast) for December 6th to January 5th, 2026.



#Key points of the 1-month forecast#

[Temperature]
Not susceptible to cold air, high in northern Japan, Okinawa and Amami,
at or above normal in western Japan.

[Snowfall]
The amount of snowfall on the Sea of Japan side of northern and eastern Japan is at or below normal.
On the Sea of Japan side of western Japan, it is less.

[Precipitation]
As it is less affected by cold air and easily covered by high pressure,
the Pacific side of eastern Japan, western Japan, and Okinawa/Amami will be at or below normal levels.

[Sunshine hours]
Most of the sunshine is on the Pacific side of eastern Japan and western Japan, and in Okinawa and Amami it is at or above normal.



Looking at the monthly average sea level pressure (figure on the left) in the forecast results from the numerical forecast model,
the area around Japan is light blue, and
the deviation from the normal year is expected to be small.

The atmospheric pressure is relatively high in the south of Japan, and it is expected that there will be periods when the area from the Pacific side of eastern Japan to Okinawa and Amami is likely to be covered by high pressure.

On the other hand, the temperature at approximately 1,500 meters above the ground (right chart) is shown in orange mainly from
eastern Siberia to central China, and
is expected to be higher than normal.
For this reason, it is expected that the whole country will be less affected by the cold weather.




#In winter with strong temperature differences#

Looking at the weekly temperature forecast,
In the first week, the temperature will be high in northern Japan, western Japan, and Okinawa Amami,
the sun will feel warm during the day,
down coats may be used less than usual.

However, in the second week, temperatures in northern Japan will be at or below normal,
and there may be many days in mid-December when you feel like it's suddenly getting colder.
On the other hand, there is a possibility that conditions such as ``this winter will be warm'' will continue in places such as western Japan.

In the 3rd to 4th week, temperatures are expected to be near normal across the country, so there is a possibility that we will have the usual cold Christmas and New Year holidays.

The experience of winter can change drastically from day to day, so
should be sure to check the weather forecast for temperatures etc. before heading out.

---------------------------------------

In this way, looking at the whole month, the
forecast is for a ``warm winter and little snow,'' but if we take the ``average'' temperature and snowfall for the month,
it's just that the temperature is expected to be higher and there will be less snow than normal,
that doesn't mean it will always be warmer and there will be less snow.

Just like every year, during the period from Christmas to the New Year,
cold waves (strong cold air that flows over a long period of time) strike,
bringing low temperatures and heavy snow.

This winter, there will be days when it will feel warmer than usual,
due to sudden cold waves, and places where there will be heavier snow than usual,
and days where the temperature will be lower.

It is important to check the daily weather forecast frequently rather than just relying on the monthly forecast results.

[Kanto-Koshin] First snow in Utsunomiya. Although the cold air has passed, Nagano Prefecture and the northern Kanto region should be careful of snowfall, frozen roads, and avalanches.

2025/12/04 11:49

The area around Japan had a winter-like atmospheric pressure pattern, with cold air below -30 degrees Celsius flowing into the Kanto-Koshin region at an altitude of approximately 5,500 meters, but the peak of the cold air is passing.
The possibility of warning-level heavy snow has decreased in Nagano Prefecture and the northern Kanto region.
In Nagano Prefecture and the northern Kanto region, it is snowing, and there are some places that have accumulated snow mainly along the mountains and in the mountains.
In Utsunomiya, the first snow was observed today, the 4th (Thursday).
[First Snow] Utsunomiya 12 days earlier than normal and 03 days earlier than last year
The winter-like atmospheric pressure pattern is expected to gradually loosen up until tomorrow, the 5th (Friday).



#Snow commentary
Snow depth as of 10am today, Thursday, April 4th (preliminary figures from AMeDAS)
+Tochigi Prefecture
Torobe, Nikko City 29cm
Oku-Nikko Chuzenji Lakeside 16cm
Nasu Highlands 14cm
+Gunma Prefecture
Minakami-cho Fujiwara 38cm
Minakami-cho Yubara 25cm
+Nagano Prefecture
Shinanomachi 24cm
Iiyama 15cm
Nozawa Onsen 14cm

#Snow forecast
24-hour snowfall forecast by noon on Friday the 5th (in areas with the most)
Northern Kanto region 15cm
Koshin region 20cm



In Nagano Prefecture and the northern Kanto region, please be aware of traffic disruptions due to snowfall and frozen roads through the evening of Thursday, April 4th.
Also, please be careful of avalanches into tomorrow, the 5th (Friday).

Beware of heavy snow in the Tohoku region until noon tomorrow; Beware of traffic disturbances in the northern Kanto region

2025/12/04 06:47

There is a low pressure system east of Japan, moving northeast. The low pressure system is rapidly developing and is expected to move toward the Kamchatka Peninsula by the evening of today, the 4th (Thursday), and a winter-like pressure pattern is expected to strengthen near Japan. The winter-like atmospheric pressure pattern will continue into tomorrow, the 5th (Friday). In addition, strong cold air for this time of year is flowing into the Tohoku region at around 5,000 meters above the ground, below -36 degrees Celsius, and into the Kanto-Koshin region below -30 degrees Celsius.

As of 6:30 a.m., a blizzard warning has been issued for the coastal areas of Akita and Yamagata prefectures, and a heavy snow warning has been issued for Gunma and Nagano prefectures.

On the Sea of Japan side of Tohoku, the wind from the west is very strong and is accompanied by snow, which will cause heavy turbulence on the sea. In addition, heavy snow is expected in some places in the Tohoku region.
Also, strong cold air is flowing into the sky, making the atmosphere extremely unstable, and cumulonimbus clouds are expected to develop in some places, causing thunderstorms.
There will be heavy snow in some places in Nagano Prefecture and the northern Kanto region until noon today, the 4th (Thursday).



#Expected wind strength
+Maximum wind speed (maximum instantaneous wind speed) expected today, the 4th (Thursday)
Tohoku Sea of Japan side Sea Top 20m/s (30m/s)
Tohoku Sea of Japan side Land 18m/s (30m/s)
Tohoku Pacific side Sea 18m/ s (30m/s)
Tohoku Pacific side land 13m/s (25m/s)

#Expected wave height
+Today 4th Expected wave height
on (Thursday) Tohoku Sea of Japan side 6m
Tohoku Pacific side 4m

#Expected amount of snow (in places with a lot of it)
+Snowfall forecast for 24 hours by 6:00 tomorrow, the 5th (Friday)
Tohoku Sea of Japan side, along mountains 70cm
Tohoku Sea of Japan side, flat land 40cm
Tohoku Pacific side, mountainside 70cm
Tohoku Pacific side flat land 30cm
Northern Kanto region 20cm
Koshin Region 30cm


#Disaster Prevention Matters
On the Sea of Japan side of Tohoku, please be on guard for damage to traffic and buildings due to stormy winds from the west accompanied by snow into the morning of today, Thursday, April 4th.On the Sea of Japan side of Tohoku, please be on guard against damage to ships and coastal facilities due to high waves. In addition, in the Tohoku region, please be careful of traffic disruptions due to heavy snow, snow falling from roofs, damage to buildings and agricultural facilities, etc., and be careful of snow accretion on power lines and trees and avalanches until noon on Friday the 5th tomorrow.
Please be careful of tornadoes, strong gusts of wind, lightning, and hail, mainly on the Sea of Japan side of Tohoku, until noon tomorrow, Friday the 5th.

In Nagano Prefecture and the northern Kanto region, please be on guard for traffic disruptions due to snowfall and frozen roads until noon today, the 4th (Thursday). Also, be careful of snow accretion and avalanches on power lines, trees, etc.

Today's weather on the 4th (Thursday): Beware of heavy snow on the Sea of ??Japan side; sunny in many places on the Pacific side

2025/12/04 06:15

Today, the 4th (Thursday), there will be a strong winter-like atmospheric pressure pattern near Japan. It is necessary to be wary of heavy snow especially in northern Japan and Hokuriku. On the other hand, many places on the Pacific side will be sunny and the air will be dry.



There will be snow and rain across a wide area along the Sea of Japan, including Hokkaido, Tohoku, and Hokuriku. Heavy snowfall is expected, especially along the mountains, and snowfall is likely to increase rapidly. There are many places where even flat areas are covered with snow, so please be careful of deteriorating road conditions. There will also be strong winds, and there may be some places where it snows, such as along the coast. You also need to be careful about poor visibility due to snowstorms.

The weather in the Sanin area is likely to rain or snow until around noon.

It will be sunny in many places on the Pacific side. The wind is strong and the air is dry, so please be careful when handling fire.

Due to the effects of cold air, the temperature throughout the country will not rise, and it will be cold in the middle of winter. Please be sure to protect yourself from the cold.