From tomorrow to Friday the 13th, the atmosphere will be very unstable, with some thunderstorms, and the cold will ease on Saturday and Sunday [Weekly Forecast] (Commentary: Weather forecaster Atsuko Miyake)

2026/03/11 13:58

Today, the 11th (Wednesday), it will be sunny in many places, but tomorrow, the 12th (Thursday), the atmospheric conditions are likely to become unstable from the west.



Live weather map at 9am.
The low pressure system that brought snow and rain to the Kanto region yesterday, the 10th (Tuesday), has left Honshu at this time and is slowly moving north over the sea east of Japan.
On the other hand, a high pressure system is moving over the Sea of Japan, and
there are many sunny areas around Honshu.



The area around Honshu will be gently covered by high pressure until tonight
It looks like many places will be sunny.

However, a low pressure system is slowly approaching the Hokkaido region.
In particular, moist northerly winds will blow around the north side of the low pressure system.
Snow is expected to continue mainly on the Sea of Okhotsk side of Hokkaido.

This low pressure system will move slowly, so
snow is expected to continue falling in similar areas until tomorrow, the 13th (Friday).
Please be careful of heavy snow



A low pressure system will form near the Nansei Islands on the night of tomorrow, the 12th (Thursday).
Strong cold air flows into the sky above this low pressure system.
For this reason, the atmospheric conditions are likely to become extremely unstable from the west tomorrow, the 12th (Thursday).



Looking at the rain forecast, it seems that rain clouds will cover a wide area of the Nansei Islands around noon on the 12th (Thursday) tomorrow,
with heavy rain accompanied by thunder in some places, especially in the Amami region.

It looks like there will be some rain in the Kyushu region from evening to night.
Late at night, rain clouds are expected to develop locally in the Tokai region.
In the Tokai region, it seems that there are places where it snows at high altitudes.

Please be careful of lightning strikes and strong gusts of wind such as tornadoes.



Today, the 11th (Wednesday), it will be sunny in many places.
Moist air flows into the Kanto region in the afternoon, making it easier for clouds to spread.
There will likely be some showers and snow at night.
The cold air remains in the sky, and today, the 11th (Wednesday), there will be many places where it will be colder than normal.


Tomorrow, the 12th (Thursday), it will be sunny in many places during the day, but
Okinawa will experience rain and thunderstorms, and
Even in Kyushu, which does not have a rain symbol, there will be places where it will rain in the afternoon.
At night, there is a possibility of rain or snow in places in the Tokai and Kanto regions.



Due to strong cold air flowing in on Friday the 13th, Niigata is marked with a snow mark.
However, I think the time it will snow will be short.
On Saturday and Sunday, it looks like the temperature will finally return to normal.
It looks like the cold will ease up.
However, the temperature difference is likely to increase, so please take good care of your health.

Possibility of snow in the Kanto region including Tokyo on Friday the 13th. A low pressure system is expected to move along the southern coast of Honshu.

2026/03/11 08:12

Around the 13th (Friday), snow or rain is expected to fall in the Kanto region as a low pressure system develops along the southern coast of Honshu and moves eastward.
In addition, there is a risk of particularly strong winds and rough weather in the coastal areas of eastern Japan, which are close to low-pressure areas.



A low pressure system will form near the Nansei Islands around the 12th (Thursday), and is expected to move east along the southern coast of Honshu with the front through the 13th (Friday). It is also expected to rapidly develop and move east of Japan until the 14th (Saturday).
As a result of this low pressure system, widespread rain or snow will fall in Kanto and Shizuoka prefectures around the 13th (Friday).
As a pressure trough with cold air approaches in the sky, snow will fall mainly along the mountains, and there is a possibility of snow and sleet in the Kanto plains as well.
The winds will be strong in the coastal areas of eastern Japan and the Izu Islands, so be careful of strong winds and high waves.
Please be careful of disruptions to transportation.

Please note that forecasts may change depending on the path and development of the low pressure system, so please check the latest information.

Low pressure systems pass through in short cycles, with many cloudy, rainy, and snowy days, with heavy snowfall in some places on the Pacific side of Hokkaido (weather summary from March 1st to March 7th, 2026)

2026/03/11 06:30

This is a summary of the weather for this period (March 1st to March 7th, 2026)

#Summary of the weather for this period (March 1st to March 7th)
The average temperature was higher than normal in many places because warm air easily entered from the south due to the influence of a low pressure system and the influence of cold air was relatively weak. In particular, temperatures in northern Japan tended to be significantly higher than normal, with temperatures exceeding normal in Kushiro and Asahikawa by more than 3 C.

Due to the fact that low pressure systems and fronts often passed near Honshu throughout the period, there were many places in western to eastern Japan that experienced above-average precipitation. On the Pacific side of Hokkaido, there were days when a low-pressure system moved near the coast of Sanriku, resulting in heavy snow, resulting in precipitation that was significantly higher than normal.

Sunshine hours tended to be slightly below normal in western Japan, where there were many cloudy, rainy, and snowy days due to low pressure and fronts, and in northern Japan, mainly in Hokkaido, they were well below normal. In the Nansei Islands, weather conditions tended to be below normal, with many cloudy and rainy days due to fronts and humid air.



[About the weather during this period]
#Characteristics of pressure distribution
On the 1st, a low pressure front accompanied by a front moved north-northeast in the sea near Chishima. The area around Honshu is widely covered by high pressure, and the front is stationary around central China. On the 2nd, a new low pressure system formed near the Yellow Sea and near the East China Sea on the front. They each moved towards the east. On the 3rd, a low pressure system accompanied by a front moved east-northeast near the southern coast of Honshu. Late at night, a new low pressure system formed near the coast of Sado and moved north-northeast through the Sea of Japan. On the 4th, the low pressure system accompanied by the front continued to develop and moved from the Izu Islands to the east of Japan. The low pressure system moving through the Sea of Japan continued northward and stopped just west of Aomori Prefecture late at night. On the 5th, the low pressure system accompanied by the front continued to develop and moved over the sea east of Japan, temporarily forming a pressure pattern of high in the west and low in the east around Honshu. On the 6th, a low pressure system accompanied by a front moved eastward through the Sea of Japan. A cold front extending from a low pressure system has passed through western Japan. On the 7th, a new low pressure system formed from the front's blockage point, passed through Honshu, and continued to grow as it moved northward off the coast of Sanriku. Near Honshu, a pressure pattern of high in the west and low in the east formed.

#Precipitation
On the 1st, there was snow in parts of northern Hokkaido and showers in parts of Okinawa, but there was no noticeable precipitation near Honshu. On the 2nd, rain spread from western Japan to the Nansei Islands due to the effects of a front and low pressure system, and in Okinawa, heavy rain was observed on Ishigaki Island with an hourly rainfall of 42.5 mm. On the 3rd, rain and snow fell over a wide area from Tohoku to Kyushu due to the influence of a low pressure system moving along the southern coast of Honshu. Heavy rain was observed on the Pacific side near the low pressure system, with 42.5 mm of rainfall per hour observed at Cape Muroto, Kochi Prefecture. On the 4th, the wind strengthened due to the influence of a low pressure system, and maximum instantaneous wind speeds of 28.5 m/s were observed at Cape Erimo, Hokkaido, and 28.7 m/s at Choshi, Chiba Prefecture. Snow intensified mainly on the Pacific side of Hokkaido, and Hiroo in the Tokachi region of Hokkaido experienced heavy snowfall, with 69 cm of snow falling in the 24 hours up to the 5th. On the 6th, due to the influence of a low pressure system and a front, heavy rain fell for a short period of time mainly in western Japan near the front. In Nagasaki Prefecture, heavy rain accompanied by thunder was observed in Mt. Nagaura and Saikai City. On the 7th, rain turned to snow on the Sea of Japan side as the cold air in the sky moved south, and winds strengthened mainly on the Sea of Japan side of northern Japan, resulting in rough weather.

#Temperature
On the 1st, the area from Kanto to the west experienced spring weather, with temperatures similar to April in many places. In northern Japan, temperatures have remained almost at normal levels. On the 2nd, temperatures in Kyushu were low due to rain, and the highest temperature in Fukuoka was 12.3c, about 5c lower than the previous day. The sun did not reach the Kanto region, and the highest temperature in Tokyo was 13.4c, nearly 6c lower than the previous day. On the 3rd, a low pressure system moving along the southern coast of Honshu brought cold rain and snow, and the temperature did not rise much during the day in many places. The highest temperature in Sendai was 5.4c, which is as cold as midwinter. On the 4th, the low pressure system left and the weather improved, with temperatures rising in the Kanto and Tokai regions, including Tokyo at 15.8c and Shizuoka at 18.0c. On the 5th, it became warmer from the Kanto region to the west, with Tokyo at 17.1c, the same level as early April, and Fukuoka at 17.0c, the same as late March. On the 6th, temperatures dropped in Kyushu and the Chugoku region, where it started raining in the morning. The highest temperature in Hiroshima was 9.7c, more than 6c lower than the previous day. On the 7th, temperatures dropped in northern and western Japan as cold air moved south. On the other hand, the Kanto region was less affected by the cold air, and temperatures remained similar to April, with Tokyo at 17.4 degrees Celsius and Yokohama at 18.1 degrees Celsius.

[Typhoon information] Typhoon No. 3 occurs in the east of the Philippines

2026/03/11 05:25

Typhoon No. 3 formed in the east of the Philippines at around 3 a.m. today, Wednesday the 11th.

#Typhoon No. 3 As of 3:00 a.m. on the 11th (Wednesday)
==================
Center location East of the Philippines
Movement speed Almost stagnant
Central pressure 1000hPa
Maximum wind speed 18m/s (near the center)
Maximum instantaneous wind speed 25m/s
==================



Typhoon No. 3 is expected to move east-southeast over the sea east of the Philippines, change course to east-northeast around 3 a.m. on the 12th, and approach the Mariana Islands.

The current forecast is that Typhoon No. 3 is expected to turn into a tropical cyclone near the Mariana Islands around 3:00 on the 13th. Therefore, there will be no direct impact on areas near Japan.

El Nino monitoring bulletin: The possibility of El Nino occurring into the summer increases

2026/03/10 18:19

On the 10th (Tuesday), the Japan Meteorological Agency released the latest El Nino monitoring bulletin.

Currently, we are in normal conditions, with neither El Nino nor La Nina phenomena occurring, but conditions close to La Nina are expected to be resolved.
It is predicted that the probability of an El Nino phenomenon occurring will be higher in the future in the summer.

The difference in sea surface temperature in the El Nino monitoring area in February from the standard value was +0.1c, which is close to the standard value. Additionally, the 5-month moving average used to determine the occurrence of El Nino and La Nina phenomena in December was -0.4 C, close to the standard value.
Sea surface temperatures in the equatorial Pacific Ocean remained higher than normal in the western and eastern regions and lower than normal in the central region.
The surface water temperature of the ocean in the equatorial Pacific Ocean remained higher than normal, except for parts of the eastern part that were lower than normal.
Easterly winds (trade winds) in the lower atmosphere of the equatorial Pacific were stronger than normal in the western and central regions, but were almost at normal levels in the eastern region. Convective activity became somewhat inactive near the international date line in the equatorial Pacific.

The above results indicate that although we are in a normal state where neither El Nino nor La Nina phenomena have occurred, conditions close to La Nina phenomena are on the way to being resolved.



According to the live report, warm water on the surface of the ocean from the western to central equatorial Pacific Ocean is moving eastward. The coupled atmosphere-ocean model predicts that the eastward movement of this warm water region will intensify and move eastward, causing sea surface temperatures in the El Nino monitoring area to gradually rise through the summer. From spring to summer, sea surface temperatures are expected to be close to or above the standard value (however, there is a wide range of predictions for El Nino events that will extend beyond the spring).

From the above, the probability that an El Nino phenomenon will occur during the spring and the probability that normal conditions will continue are about the same (50%), and there is a possibility that normal conditions will continue in the summer (40%). However, the probability of an El Nino event occurring in summer is expected to be relatively high (60%).


#What is the El Nino/La Nina phenomenon
The El Nino phenomenon is a phenomenon in which sea surface temperatures are higher than normal from the equatorial Pacific Ocean near the international date line to the coast of South America, and this condition continues for about a year.

On the other hand, a phenomenon in which sea surface temperatures continue to be lower than normal in the same area is called a La Nina phenomenon.

Once an El Nino or La Nina phenomenon occurs, it is thought that abnormal weather will occur all over the world, including Japan.

Typhoon No. 3 to occur Typhoon egg developing in east of Philippines [Latest tropical cyclone information]

2026/03/10 11:31

At 10:30 a.m. today, the 10th (Tuesday), the Japan Meteorological Agency announced that a tropical cyclone developing in the east of the Philippines is expected to develop into a typhoon within 24 hours.
When the next typhoon occurs, it will be called "Typhoon No. 3," and it will be the first typhoon in about a month.
It looks like this will be the first typhoon to occur in March.



#Tropical cyclone Today 10th (Tuesday) 9:00 am
Existence area East of the Philippines
Center location 11 degrees 10 minutes north latitude 137 degrees 40 minutes east longitude
moving almost stagnant
central pressure 1006 hPa
maximum wind speed 15 m/s (near center)
maximum instantaneous wind speed 23 m/s

As of 10:30 a.m. today, the 10th (Tuesday), there is a possibility that a tropical cyclone that is developing in the east of the Philippines will become stronger and develop into a typhoon.
This tropical cyclone is mostly stationary east of the Philippines, and is expected to develop into a typhoon east of the Philippines by 9 a.m. tomorrow, Wednesday the 11th.
The next day, it will move slowly east-northeast until the 12th (Thursday), and on the 13th (Friday) it will move northeast and reach the Mariana Islands.
It is expected to turn into a tropical cyclone over the Mariana Islands at 9:00 a.m. on Friday the 13th.
It is unlikely that it will move north, so there will be no impact on Japan.



Looking at the average number of typhoons from January to March, it is the period with the lowest number of typhoons in the year, at 0.3 per month.
Also, even if a typhoon occurs, it never approaches the Japanese archipelago, and since statistics began, there has been no record of a typhoon approaching from January to March.

Today, the 10th, is a cold day across the country.The Kanto region is as cold as mid-winter.The cold days continue into the weekend.

2026/03/10 06:53

Today, the 10th, cold air will flow into Japan, and temperatures across the country are expected to rise slowly, with many places expected to be at or below normal. Particularly in the Kanto region, it is expected to be as cold as mid-winter, and the predicted maximum temperature in central Tokyo is expected to be a bitterly cold 10c. Please be sure to protect yourself from the cold before going out.

The predicted maximum temperature in each region is Sapporo 2c, Sendai 8c, Tokyo 10c, Nagoya 12c, Kanazawa 7c, Osaka 10c, Kochi 14c, and Fukuoka 13c.



Cold air will continue to flow into the weekend, so it looks like it will be a mildly warm week.
Over the weekend, the 14th (Saturday), there will be many days with temperatures that are at or below normal across the country, and the cold will continue. Not only northern Japan, but also the Sea of Japan side of eastern and western Japan is expected to experience severe cold weather, with maximum temperatures in the single digits on some days. Temperatures on the Pacific side will also rise slowly.
It looks like winter clothes will be popular this week.

On the other hand, from the 15th (Sunday) onwards, the effects of the cold air will weaken, and temperatures are likely to return to normal levels in many places. In some places in western Japan, the weather will be as sunny as in April, and the cherry blossoms will likely continue to grow.

Today's weather on the 10th (Tuesday): Snow in northern Kanto until morning, sunny in many places in western Japan

2026/03/10 06:21

Today, the 10th (Tuesday), a low pressure system is expected to move eastward east of Japan, and the area around Japan is expected to be gradually covered by high pressure.



There will be a lot of clouds in northern Japan, especially on the Sea of Japan side, and there will be some light snow showers on the Japan Sea side of Hokkaido around noon.

The skies in Hokuriku and Sanin are also prone to rain and snow, especially in the morning. Please bring rain gear when going out.

There will be some places in the Kanto region where it will snow in the northern part of the country until the morning. Even in flat areas, snow may accumulate in some places, so please be careful and be on guard against traffic problems caused by snow accumulation and frozen roads.
There is also a chance of showers in the south by mid-morning, but the weather is expected to improve in the afternoon.

There are many places west of the Tokai Sea where sunlight reaches during the day. Even if it's sunny, the air will be cool, so please dress warmly.

Rain and snow expected in the Kanto region tonight; heavy snow expected in the northern region into the morning of tomorrow, the 10th.

2026/03/09 13:03

Today, the 9th (Monday), the area around Honshu is gently covered by high pressure, and many places in the Kanto region are experiencing sunny skies. After this, due to the influence of a low pressure system off the coast of the Kanto region, clouds will gradually spread from the evening, and rain and snow will begin to fall in some places tonight.
If you will be returning home late, it is a good idea to bring rain gear.



The Kanto region is expected to have unstable atmospheric conditions due to the effects of low pressure over the ocean and cold air flowing into the sky, making it easier for rain clouds to develop. Rain and snow will begin to fall in places late tonight, and in some places it may be accompanied by thunder in Ibaraki and Chiba prefectures. In addition, there is a risk of heavy snow even in flat areas in northern areas such as Ibaraki and Tochigi prefectures.



In the northern Kanto region, there is a risk of heavy snow even in flat areas from early morning until the morning of the 10th (Tuesday).
The predicted 24-hour snowfall amount is expected to be 5 cm in the northern part of Ibaraki Prefecture, the northern mountains and southern plains of Tochigi Prefecture from 6 am on the 9th to 6 am on the 10th, and 3 cm in the northern part of Ibaraki Prefecture from 6 am on the 10th to 6 am on the 11th.
If the surface temperature is lower than expected or the amount of precipitation is higher than expected, there is a possibility of heavy snowfall.
Please be careful and alert to traffic obstructions due to snowfall and frozen roads. Also, be careful of snow accumulating on overhead lines, power lines, and trees.

Tomorrow, the 10th (Tuesday), will be gradually covered by high pressure, and many places will see rain and snow until around noon. It is likely that snow will remain in some areas during tomorrow's commute to work or school, so please be careful of deteriorating road conditions. The weather is expected to gradually improve in the afternoon.

[Weekly weather] Cool and sunny weather towards the middle of the week

2026/03/08 19:01

In the Sea of Okhotsk, there is a well-developed low pressure system with a front that is moving northeast.
Also, there is a well-developed low pressure system with a front over the sea east of Japan, and it is moving northeast.
On the other hand, there is a high pressure system over the Yellow Sea that is protruding to the east.

Currently, the area around Japan has a winter-like atmospheric pressure pattern centered on northern Japan, and snow is falling on the Sea of Japan side from Hokkaido to Hokuriku.
Today, it was sunny in many places on the Pacific side of northern Japan and in western and eastern Japan, but the weather was so sunny that the wind felt cold and cool.



Tomorrow, the 9th (Monday), the winter-like pressure system will loosen during the day, and high pressure will spread from the west, so the area of snow on the Sea of Japan side of northern Japan will become narrower.
Although it will be sunny in many places on the Pacific side of northern Japan and from Kanto to Kyushu and Okinawa,
temperatures will not rise much, and many places nationwide will be at or below normal, and the air will feel cool.







In addition, a low pressure system is expected to form near the Sea of Japan and the Kanto region at night.
Even in western and eastern Japan, there are places on the Sea of Japan coast, along the mountains, and in the Kanto region where it rains or snows, so if you're going home late, it's a good idea to bring a folding umbrella with you.

A low pressure system is expected to move eastward along the southern coast of western and eastern Japan around the 10th (Tuesday) and 12th (Thursday).
There are some places on the Pacific side where it will rain, and in some cases there is a possibility of snow, so please pay attention to future weather information.





Other days will be sunny on many days, but temperatures across the country are likely to remain slightly lower than normal until the middle of the week.
Temperatures drop at night and early in the morning, and it gets even colder inland, so there are likely to be places with temperatures of 0 degrees or below zero in western and eastern Japan.
Please be careful of late frost and frozen roads.

From the weekend onwards, the temperature is gradually rising, and it looks like it will be a sunny weather typical of this time of year.