Weekly weather There will be many days affected by fronts and low pressure next week. Ogasawara Islands should be careful of approaching typhoons

2026/04/12 19:22

The weather from the beginning of the week, the 13th (Monday), is expected to be cloudy on some days due to a stationary front to the south of Japan and a low pressure system moving northeast across the Sea of Japan. There is a possibility that a typhoon will approach the Ogasawara Islands around the weekend, so please be careful.



Today, the 12th (Sunday), the area around Honshu is covered with high pressure, and many places are sunny, but it is raining in Kyushu due to the influence of a front extending from the continent.
The front is expected to extend south of Kyushu tomorrow, the 13th (Monday). The weather in Kyushu and Shikoku will be cloudy and rainy.
In Hokkaido, there will be a trough in the atmospheric pressure tomorrow, the 13th (Monday), and there will be some places where it will rain.



The front will continue to remain south of Japan, and a low pressure system is expected to form above the front. Clouds are likely to spread over western and eastern Japan, and rain will fall over a wide area on the 15th (Wednesday).
The weather is likely to be cloudy in many places on the 16th (Thursday) as well.

From Friday the 17th to Saturday the 18th, a low pressure system is expected to move northeast over the Sea of Japan and pass near northern Japan. The weather will turn in from the west. When a low pressure system or front approaches, the rain may temporarily become stronger and the winds may become stronger. Please check the latest information and be careful when going out.

A typhoon is expected to pass near the Ogasawara Islands from the 18th (Sat) to the 19th (Sun). Currently, there is still uncertainty regarding the typhoon's path, etc., so please check the latest information.




Temperatures are expected to be around normal or higher than normal in many places throughout the period.
From western Japan to eastern Japan, there are many days when the temperature exceeds 20c. This is the time when people are not used to the heat yet, so when exercising, please take measures to prevent heat stroke, such as taking frequent breaks and consciously drinking water. Also, on sunny days, it's a good idea to bring a parasol and a hat when you go out.

Today's weather on the 12th (Sunday): It's sunny in a wide area, making it a good day to go out. It's raining in Kyushu from night.

2026/04/12 06:14

Today, the 12th (Sunday), a low pressure system will move northeast across the Sea of Okhotsk, and the area around Japan will be covered by high pressure. However, as the front approaches from the west at night, rain is expected to start in Kyushu from night.



Northern Japan is expected to experience snow and rain in the morning, but the weather is expected to gradually improve. There will be some places where the sun will return in the afternoon. However, the winds are strong, so please be careful of the storm especially in the coastal areas on the Tohoku Pacific side.

Sunlight will reach a wide area from eastern to western Japan. It looks like there are many places where it will be a good day to go out.
However, clouds will gradually spread from western Japan in the afternoon, and it will start to rain in some parts of Kyushu at night. If you are returning late, it is a good idea to bring rain gear.

The temperature will ease from the previous day's heat, and in many places in eastern and western Japan it will be around 23c during the day. It looks like it will be a comfortable experience. Temperatures in northern Japan will be similar to normal, but strong winds will make it feel cool.

Northern Japan faces strong winds into tomorrow 12th; watch out for traffic disruptions and damage to buildings

2026/04/11 20:39

A low pressure system is located in the northern Sea of Japan and is moving northeast.



The low pressure system will continue to develop and move toward the Sea of Okhotsk through tomorrow, the 12th (Sunday).
As a result, the atmospheric pressure in northern Japan is expected to have a large gradient and westerly winds will become stronger.
As of 20:00, a storm warning has been announced for all of Miyagi Prefecture.




#Expected wind strength
[Hokkaido]
+Maximum wind speed (maximum instantaneous wind speed) expected today, the 11th (Saturday)
Northern land on the Sea of Japan side 20m /s (35m/s)
Northern sea on the Sea of Japan side 20m/s (30m/s)
Southern sea on the Sea of Japan side 18m/s (30m/s)
Pacific Ocean Western sea side 18m/s (30m/s)
+Maximum wind speed (maximum instantaneous wind speed) expected for tomorrow 12th (Sunday)
Northern land on the Sea of Japan side 18m/s (3 0m/s)
Northern Sea on the Sea of Japan side 20m/s (30m/s)
Southern land on the Sea of Japan side 18m/s (30m/s)
Southern Sea on the Sea of Japan side 18m/s (30m/s)
18m/s (30m/s)
[Tohoku]
+Maximum wind speed (maximum instantaneous wind speed) expected until tomorrow the 12th (Sunday)
Northern land on the Sea of Japan side 15m/s (30m/s)
Northern Pacific side Sea 18m/s (30m/s)
Northern land on the Pacific side 15m/s (30m/s)
Southern sea on the Pacific side 18m/s (30m/s)
Taiping Southern land on the ocean side 18m/s (30m/s)

#Disaster prevention matters
In northern Japan, extremely strong winds are expected to blow from the west, mainly in the coastal areas, into tomorrow, the 12th (Sunday). On land in the southern part of Tohoku on the Pacific coast, please be on guard for strong winds and traffic disruptions and damage to buildings from the early evening of today, the 11th (Saturday) to the early afternoon of tomorrow, the 12th (Sunday).
In addition, strong winds will continue on the Japan Sea side and the western Pacific Ocean side of Hokkaido into the afternoon of the 12th, so please be careful of strong winds into the evening of the 12th (Sunday).
Depending on the path and degree of development of the low-pressure system, the area and period of strong winds may expand, so please pay close attention to the latest information.

Tomorrow, the 11th (Saturday), the southern Kanto region is expected to experience summer weather - be careful of spring heatstroke

2026/04/10 13:09

The low pressure system that brought rain across the country today is moving north, and the front is moving away to the east of Japan. The weather will continue to be rough in northern Japan, so please pay attention to the latest information.



The weather will improve from eastern Japan to western Japan,
with clear skies and temperatures rising.
In particular, summer temperatures are predicted to be 27c (similar to late June) in Tokyo and 25c (similar to early May) in Kagoshima.



The body that has just passed winter and just welcomed spring is not yet accustomed to the heat.
Please be careful of ``spring heatstroke'' caused by a sudden rise in temperature at a time when you are not used to sweating.
Take care to prevent heat stroke by choosing cool clothing and being more conscious of hydration than usual.



Symptoms of heatstroke may suddenly worsen.
If someone is feeling unwell and needs a break,
it is strictly prohibited to leave that person alone.

If your symptoms are severe, please consult a medical institution appropriately.

[Typhoon information] Typhoon No. 4 occurs near Truk Islands

2026/04/10 06:41

At around 3 a.m. on the 10th (Friday), a tropical cyclone that was developing near the Truk Islands became Typhoon No. 4.

#Typhoon No. 4 10th (Friday) 3:00 a.m.
==================
Center location: Near Truk Islands
Traveling speed: West 20km/h
Central pressure 996hPa
Maximum wind speed 18m/s (near the center)
Maximum instantaneous wind speed 25m/s
=================



Typhoon No. 4 is expected to continue to develop and move northwestward, and is expected to become extremely strong by the 12th. It is expected to approach the Mariana Islands around the 14th, at which point the central pressure will be 920 hPa, the maximum wind speed near the center will be 50 m/s, and the maximum instantaneous wind speed will be 70 m/s.

From next week onwards, the typhoon may gradually move northward into the southern seas of Japan and have an impact, so please pay attention to the updated typhoon information.

Latest 1-month forecast: Western and eastern Japan's Pacific side has many cloudy and rainy days, with high temperatures nationwide around Golden Week

2026/04/09 20:45

On the 9th (Thursday), the Japan Meteorological Agency announced the latest one-month forecast, which shows the weather outlook for the next month.



The forecast for the average sea level pressure for one month shows that the sea level pressure near the southern coast of Honshu will be relatively low, resulting in a weak pressure trough. For this reason, western Japan and the Pacific side of eastern Japan seem to be more susceptible to the effects of low pressure systems and fronts. The area around Okinawa and Amami will likely be covered by high pressure.
The temperature distribution at approximately 1,500 meters above the ground is expected to be warmer air that will cover a wide area around Honshu, and temperatures will likely be higher than normal nationwide.



The weather from northern Japan to the Hokuriku region will change every few days, and the amount of precipitation will be around normal. Okinawa/Amami is easily covered by high pressure, so precipitation is likely to be lower than normal.

On the other hand, western and eastern Japan is susceptible to the effects of low pressure systems and fronts, so there will be many cloudy and rainy days, and precipitation will be higher than normal, especially on the Pacific side. There is a possibility of rain during the Golden Week period in May, and depending on the trends of low pressure systems and fronts, the weather could become rough. Please be sure to check the latest weather information when planning your plans during the holidays.



From now on, temperatures will be higher than normal nationwide, and there will be many summer days with temperatures above 25c. Depending on the weather conditions, there may be some places inland that experience midsummer days with temperatures above 30 degrees Celsius.
In particular, the Japan Meteorological Agency has released early weather information regarding high temperatures, predicting that temperatures from around April 15th are expected to be ``significantly higher'' than normal in Hokuriku, Tokai, Kyushu, Okinawa, and Amami.
Although the full-scale arrival of summer is still a long way off, it is important to take precautions to avoid heatstroke by drinking water and taking frequent breaks when participating in outdoor activities.

Sea surface temperatures around Japan are higher than normal Ocean summary (March 29, 2026 - April 4, 2026)

2026/04/09 18:38

Sea surface temperatures around Japan continue to remain high.
Sea surface temperatures in the waters of Japan were up to 4c higher than normal in the northern and central regions, and up to 5c higher than normal on the western continental side.
Marine summary from March 29, 2026 to April 4, 2026.



#Pressure distribution and waves
On March 29-30, a front extended from South China to the East China Sea, and a low pressure system moved eastward above the front. Waves gradually increased in the waters near the Nansei Islands.
From April 31st to April 1st, a low-pressure system in the Sea of Japan, accompanied by a front, passed near Honshu and moved eastward to Japan.
From the 1st to the 3rd, a low-pressure system developed on a front in the East China Sea and moved east-northeast along the southern coast of Honshu, then northeast east of Japan.
From the 31st to April 3rd, the storm spread from the south of Japan to the east of Japan. On the 1st and 3rd, there was a big storm in eastern Japan.
On the 4th, a low pressure system accompanied by a front moved from the Yellow Sea, passed near the Tsushima Strait, and headed toward the Sea of Japan. Waves increased in the Tsushima Strait, the East China Sea, and the waters near the Nansei Islands.



#Sea surface temperature
Sea surface temperatures in the Japanese sea area were higher than normal by up to 4 C above normal in the northern and central regions, and up to 5 C above normal on the western continental side.
In the East China Sea, sea levels continued to be higher than normal.
The sea area near the Nansei Islands has expanded slightly higher than normal.
South of Japan, areas of higher-than-normal waters have expanded.
To the east of the Kanto region, the area of higher-than-normal waters has shrunk. It was up to 3 degrees higher. Off the coast of Sanriku, the sea area continued to be lower than normal, with temperatures as low as 3 degrees Celsius.
The sea area around Hokkaido was normal, and the sea ice area in the Sea of Okhotsk has shrunk.

Tonight and tomorrow another "spring storm", 11th (Saturday) Tokyo is expected to be 27 degrees Celsius and a summer day (commentary: weather forecaster Atsuko Miyake)

2026/04/09 13:42

From tonight to tomorrow, the 10th (Friday), the rain and wind will become stronger again, making it likely to become a ``spring storm.''



First, let's take a look at the state of the clouds at this time.
There are still many sunny areas in eastern and northern Japan within the area of high pressure.
Meanwhile, a large mass of clouds is approaching from the continent.

Clouds associated with low pressure systems and fronts.
Clouds are spreading in western Japan, and it is starting to rain in some places.



Let's take a look at tonight's forecast weather map and the forecast weather map for tomorrow and the day after.
A low pressure system and front will be approaching from the west tonight.
The low pressure system near the Yellow Sea is expected to move towards the Sea of Japan by tomorrow,
and is expected to continue moving northeast as it develops.

It is expected to advance further into northern Hokkaido and develop further into the 11th (Saturday).
Western and eastern Japan will experience very unstable atmospheric conditions into Friday as warm, humid air moves toward a low-pressure front.
In northern Japan, the weather is expected to be rough as a
low pressure system approaches and develops over Saturday and Sunday.

It looks like there will be a "spring storm" over a wide area from now on through the weekend.



Rain is forecast.
After this, I will try running it in the evening.
Western Japan is expected to experience widespread rain.
Rain clouds are expected to cover the Kanto region late at night.

By the time the date changes, you will see red and yellow displays in the Chugoku and Kyushu regions.
It is expected to rain heavily and in some places it will be very heavy and the rain will be heavy.
Also, rain peaks during the dark hours of the night.
If you are in western Japan, please be careful about how it rains.



Tomorrow morning, red signs will appear in the Kanto and Tokai regions.

Heavy rain and thunderstorms are expected on the Pacific side of western and eastern Japan.
Please be careful of sudden heavy rain, lightning strikes, and gusts of wind.
After tomorrow evening,
the area of rain will gradually narrow from the west.
The rain is expected to stop in the Kanto region at night.



However, the windy conditions are likely to continue.
As the low-pressure system approaches, there is a possibility that a storm warning will be issued in
northern Kyushu from tonight to tomorrow.
In addition, due to the influence of a developing and approaching low pressure system, there is a risk of strong winds in Hokkaido, mainly on Saturday and Sunday.
Over this weekend, there will be strong rain and winds that will affect transportation in various places.

Please pay close attention to the latest traffic information.
lets you see detailed weather information for each location.



Tomorrow, there will be heavy rain with thunder or very heavy rain in some places until morning in western Japan and until evening in eastern Japan.

Be careful and be on guard against heavy rain and strong winds.
It is expected to start raining in northern Japan from around noon.
The wind is getting stronger and it looks like it's going to rain sideways.



Finally, the weekly forecast.
The weather will improve on Saturday the 11th.
It will be sunny in many places from Okinawa to Tohoku.
And the temperature will be higher.
It may be the first summer day of the year in Tokyo at 27 degrees.

Next week, there will be more rain in many places.
The low pressure system is likely to cause rain in many places, especially in western and eastern Japan, where the front approaches.

The weather is going downhill from the west, with rain and wind expected to increase over a wide area tomorrow

2026/04/09 12:16

The high pressure system that brought calm and sunny skies yesterday is moving away to the east of Japan.
Meanwhile, a low pressure system accompanied by a front is located near China and is moving east-northeast.
A warm front extending from this low pressure system is expected to reach the Kyushu region by night.
Warm and humid air will flow into the front from the south, causing unstable atmospheric conditions.



For this reason, the weather is gradually descending from the west, and there are places from the Chugoku region to Kyushu where it has already begun to rain.
The area of rain will gradually spread to the east, and there is a possibility that it will start raining in the evening in some parts of the Kanto region.



The low pressure system will continue to develop over the 10th as it moves towards the Sea of Japan, and the front is expected to pass near Honshu.
Atmospheric conditions will be extremely unstable mainly in western Japan from the night of the 9th to the 10th as warm, humid air flows towards fronts and low pressure systems.
Also, there is a risk that the gradient of atmospheric pressure will increase with the high pressure system to the east of Japan, and the winds will become stronger.



From the night of the 9th to the 10th, western Japan should be careful of lightning, tornadoes, severe gusts, and sudden heavy rain.
If there are signs that a developed cumulonimbus cloud is approaching, please take precautions such as moving inside a building.

Northern Japan is as cheerful as May, with temperatures expected to be similar to late June in Tokyo over the weekend.

2026/04/09 07:06

Today, the 9th (Thursday), a high pressure system will cover northern Japan and the Kanto region, and sunshine is expected to reach the area during the day. As warm air flows in from the south, temperatures are expected to rise, with many places in northern Japan reaching a maximum of over 15 degrees Celsius, and many places expected to experience temperatures similar to early to mid-May. The temperature difference between morning and evening and during the day will be large, so please be careful of the temperature difference.
The Kanto region also has many sunny spells during the day, and it will be warm, typical of this time of year.
Western Japan will have a cloud-dominated sky, but the temperature will be around 20c in many places, and it is likely to be as warm as normal in many places.

The predicted maximum temperature is Sapporo 17c, Sendai 19c, Tokyo 20c, Nagoya 21c, Kanazawa 22c, Osaka 21c, Kochi 20c, Fukuoka 20c.



This weekend, from the 11th (Saturday) to the 12th (Sunday), the temperature is expected to reach +12c at an altitude of around 1500m, which is warm for this time of year and is expected to flow into the vicinity of Japan. As the area around Japan is covered by high pressure, the weather will improve in many places, and it is likely to be unseasonably hot in many places this weekend.

On Saturday the 11th, temperatures are expected to exceed 20c from western Japan to eastern Japan and the southern part of Tohoku. In central Tokyo, the expected maximum temperature is 27c, which is similar to late June. This is the time when people are not used to the heat yet, so those who exercise should be careful to avoid heat stroke by drinking plenty of water.
The warm weather will remain on the 12th (Sunday), with temperatures expected to be similar to those from May to early June, mainly in northern and eastern Japan. It is expected that it will be summer in Nagoya and Osaka as well.
Then, from around the 13th (Monday), a low pressure system will approach from the west, resulting in cloudy and rainy weather, and temperatures are expected to settle down to normal levels.