Weather for today, the 27th (Monday): Extreme heat continues west of the Tokai region. Atmosphere is unstable in western and eastern Japan.

2026/07/27 07:30

Today, the 27th (Monday), it will be cloudy and rainy in many places in the San'in, Hokuriku, Kanto-Koshin and Tohoku areas, and there will be some places where it will rain very heavily with thunder, mainly in the morning in the San'in and Hokuriku areas, and in the afternoon in the Kanto and Tohoku areas. The sun will reach other areas, and the intense heat is likely to continue.



Tokai and western Japan will experience intense heat today, with many places experiencing extremely hot days with temperatures exceeding 35c. Temperatures are expected to reach 39 degrees Celsius in places like Hita in Oita Prefecture, Kurume and Saga City in Fukuoka Prefecture, and the temperature is expected to reach dangerously close to 40 degrees Celsius.



However, atmospheric conditions are expected to be unstable in various places. In particular, thunderclouds are likely to develop in the morning from the San'in region to Hokuriku, and in the afternoon from the Pacific side of western Japan to the Tohoku region, and heavy rain is likely to occur in some places, especially in the Kanto region. Be careful of landslides and flooding of low-lying land.



In addition, some places in Hokuriku and Tohoku are experiencing record heavy rain for July. The ground is loose in some places, so you need to be on guard against landslides.

Weather for the week: Be careful of heavy rain at the end of the rainy season in Tohoku and Hokuriku; severe heat continues from Kanto to Kyushu every day

2026/07/26 18:30

From now on, fronts and low pressure systems will pass through northern and eastern Japan, and there will be many days when the weather is likely to stagnate. Additionally, due to rising temperatures and humid air during the day, you should be careful of sudden rain and thunderstorms in the afternoon.



Tomorrow, the 27th (Monday), it will rain in some places in Tohoku and Hokuriku through the morning, but the area of rain will gradually become narrower, but the sky pattern is likely to continue with clouds easily spreading.
In the afternoon, rain clouds and thunderclouds are likely to develop mainly in the inland areas of Honshu and along the mountains. Even if it's sunny when you go out, the weather can change suddenly in the afternoon, so be careful of sudden rain or thunderstorms that fall in a short period of time.

Tohoku and Hokuriku areas are likely to experience continued cloudy and rainy days due to fronts and low pressure systems. A low pressure front is expected to pass near northern Japan around the 29th (Wednesday). After that, the front is expected to stay near Tohoku-Hokuriku until around the 31st (Friday), and there will be warning-level heavy rain from the Sea of Japan side of Tohoku to the vicinity of Niigata Prefecture, and total rainfall will increase in some places.
The ground has become loose in some places due to heavy rain, and even with light rain, landslides are more likely to occur, so please be careful.
Around the 1st (Saturday), the influence of the front will be less and the Tohoku and Hokuriku regions are expected to have many sunny days. It looks like the rainy season will finally end in Tohoku and Hokuriku next month.

The severe heat will continue from Kanto to Kyushu, and western Japan will be covered in midsummer high pressure, with temperatures rising to nearly 35 degrees Celsius every day. Depending on the location, there may be places that record extremely hot days with temperatures exceeding 40 degrees Celsius. Also, the temperature will not drop at night and the tropical nights will continue. Regardless of day or night, please be extremely careful to avoid heat stroke, drink plenty of water and salt, and use air conditioning indoors to prevent heat.

Weather for tomorrow 27th (Monday): Unrefreshing weather in Kanto and Tohoku

2026/07/26 17:53

The front will move eastward to the east of Japan, but atmospheric conditions are expected to be unstable mainly in the Kanto and Tohoku regions. On the other hand, western Japan and the Nansei Islands will continue to be within an area of high pressure.



The Kanto, Tohoku, and Hokuriku regions are likely to have cloudy weather tomorrow as well. There is a possibility of sudden rain and thunderstorms in the Kanto and Tohoku regions from the afternoon. Please take an umbrella with you when you go out. In Hokuriku, there is a period of time when the rain stops temporarily around noon, but it will continue to rain intermittently.
It is expected that the summer sky will continue to expand from the Tokai to the west. The weather is expected to be extremely hot, so please be extremely careful about heatstroke.
There are many places in Hokkaido that receive sunlight. The temperature is around 25c in many places, so it looks like it will be a pleasant day.

Weather for tomorrow 27th (Monday): Unrefreshing weather in Kanto and Tohoku

2026/07/26 17:51

The front will move eastward to the east of Japan, but atmospheric conditions are expected to be unstable mainly in the Kanto and Tohoku regions. On the other hand, western Japan and the Nansei Islands will continue to be within an area of high pressure.



The Kanto, Tohoku, and Hokuriku regions are likely to have cloudy weather tomorrow as well. There is a possibility of sudden rain and thunderstorms in the Kanto and Tohoku regions from the afternoon. Please take an umbrella with you when you go out. In Hokuriku, there is a period of time when the rain stops temporarily around noon, but it will continue to rain intermittently.
It is expected that the summer sky will continue to expand from the Tokai to the west. The weather is expected to be extremely hot, so please be extremely careful about heatstroke.
There are many places in Hokkaido that receive sunlight. The temperature is around 25c in many places, so it looks like it will be a pleasant day.

Front becomes more active; extremely heavy rain is likely in Hokuriku and Tohoku; strict warning against landslides

2026/07/26 06:57

The front is extending from the Sea of Japan to the Hokuriku and Tohoku regions. Atmospheric conditions are extremely unstable near the front, with active rain clouds forming from the Sea of Japan south of the front to the Hokuriku region, and extremely heavy rain of 51.0 mm per hour has been observed in Miomote, Murakami City, Niigata Prefecture.

Today, the 26th, the atmospheric conditions will be extremely unstable mainly in the Hokuriku region, with heavy rain of over 30 mm per hour accompanied by lightning, and extremely heavy rain of over 50 mm per hour expected to occur in some places. Heavy rain continues in the Tohoku and Hokuriku regions, and there is a possibility that the total amount of rainfall will increase into tomorrow, the 27th (Monday).
Also, on the Pacific side of eastern Japan to the south of the front, warm, humid air will flow into tomorrow, the 27th (Monday), and with the added influence of rising temperatures during the day, atmospheric conditions will become extremely unstable, and heavy rain is expected to occur in some places, accompanied by thunder.



#Forecasted amount of rain (in areas where there is a lot)
+Precipitation expected for 24 hours by 6:00 tomorrow 27th (Monday)
Tohoku region 100mm
Kanto-Koshin region 80mm
Hokuriku region 120mm
As of tomorrow Precipitation expected for 24 hours by 6:00 on the 28th (Tuesday)
Tohoku region 60mm

#Disaster prevention matters
In the Hokuriku and Tohoku regions, today, the 26th, please be extremely cautious of landslides, and be careful of flooding of low-lying areas, rising water levels, and flooding of rivers. In the Tohoku region and the Kanto-Koshin region, please be careful of landslides, flooding of low-lying land, and rising river waters until tomorrow the 27th (Monday).
Also, please be careful as there is a risk of strong wind gusts such as lightning and tornadoes. There is also a risk of hail, so please be careful when managing crops and agricultural facilities.

Weather for today, the 26th (Sunday): Sunny and extremely hot areas west of the Tokai region; heavy rain warning for Tohoku and Hokuriku areas

2026/07/26 06:25

Today, the 26th (Sunday), the rainy season front is expected to move southward from the Tohoku region. Meanwhile, the high pressure system is expected to remain stationary over the East China Sea. The Tohoku and Hokuriku regions near the front will continue to experience rainy weather. In addition, areas west of the Tokai region will be sunny and people should be on guard against intense heat.



The sky in Hokkaido is cloudy at times, but there are also many sunny spells. Please watch out for showers in inland areas in the afternoon.

In Tohoku and Hokuriku, there are many clouds due to the influence of the front, and it is a day with easy rain. It will rain very heavily, especially in the morning, and there is a risk of heavy rain, so strict vigilance is required to prevent landslides.

The Kanto region will receive some sunshine in the morning, but the sky will gradually become more prone to rain. It's safe to have a folding umbrella when going out.

From the Tokai region to the west, it is expected to be sunny with strong sunlight. Although it is not expected to result in consecutive days of extreme heat, the severe heat will continue. It is necessary to take precautions against heat stroke, such as hydrating frequently.

[Atmospheric conditions are extremely unstable] Be careful of sudden changes in weather even in urban areas such as Tokyo

2026/07/25 11:56

Today, the 25th (Saturday), a front is extending from the Sea of Japan through Hokuriku to the east of Kanto.
The Kanto region is on the south side of the front, and with warm, humid air flowing toward the front and rising daytime temperatures, atmospheric conditions are expected to become extremely unstable from late afternoon to late night.

In the Kanto region, there will be places where it will rain heavily with thunder from late afternoon until late at night.



Yesterday, the 24th (Friday), extremely heavy rain of 61.0 mm was observed in central Tokyo in the hour until 5:33 p.m.

Today, the 25th (Saturday), heavy rain is expected to occur in urban areas such as the 23rd ward from evening until early night, with thunderstorms of up to 40 mm per hour expected to fall in some places.
If the rain clouds develop more than expected, or if the developed rain clouds continue to cover the area, there is a risk of warning-level heavy rain.



In the Kanto region, from early afternoon to late evening today, the 25th (Saturday), please be careful of flooding of low-lying areas, underpasses, underground facilities and rising river water, and be careful of landslides.

Tomorrow, the 26th (Sunday), the front will remain stationary from the Sea of Japan to the eastern Kanto region, and the Kanto region is expected to be affected by humid air.
The clouds will spread and the heat will ease a little, with the maximum temperature expected to be around 33c in many places.




However, the Kanto region is south of the front, and warm, humid air is expected to flow in toward the front.
Added to the rise in daytime temperatures, atmospheric conditions will become extremely unstable from late afternoon to late night.
Please be especially careful of sudden changes in weather when enjoying leisure activities at the sea, rivers, or mountains.

Weather for today, the 25th (Saturday): Be careful of heavy rain due to the rainy season front in Niigata Prefecture and the Tohoku region

2026/07/25 06:48

Today, the 25th (Saturday), the rainy season front is stationary in the Hokuriku region and southern Tohoku.
Yesterday, the 24th (Friday), a weather disaster prevention bulletin was announced (record heavy rain in a short period of time) in Niigata Prefecture due to heavy rain of about 100mm per hour, and the rain is expected to continue today.
Niigata Prefecture and the Tohoku region need to be careful of heavy rain.



Today, the 25th (Saturday), it will rain in Niigata Prefecture and the Tohoku region due to the rainy season front, and there will be heavy rain accompanied by thunder in some places.
Please be careful of landslides, flooding of low-lying areas, and rising and flooding rivers. Also, be careful of lightning, tornadoes, strong wind gusts, and hail.

Clouds will likely spread even in the Hokkaido and Kanto-Koshin regions.
In the Kanto-Koshin region, warm, humid air is flowing toward the northern front, and the atmospheric conditions are expected to become unstable in the afternoon, combined with the effects of rising temperatures during the day. Please bring rain gear when going out and be careful of sudden thunderstorms.
Also, even if there are a lot of clouds, the temperature will be high and it will feel hot and humid, so don't forget to take precautions against heat stroke.

The Tokai region, western Japan, and Okinawa region are expected to be mostly clear, covered by high pressure. However, due to rising temperatures and moist air during the day, the atmospheric conditions will become unstable in the afternoon, especially along the mountains, and there is a possibility of thunderstorms. Pay attention to changes in the sky. It is predicted that there will be many hot days with maximum temperatures exceeding 35 degrees Celsius. Please be careful of heat stroke.

Record heavy rain in Niigata prefecture in a short period of time - about 100mm of rain per hour

2026/07/24 22:11

The Japan Meteorological Agency announced the first Niigata Prefecture Weather Disaster Prevention Bulletin (Heavy Rain in a Record Short Time) at 7:47 p.m. today, Friday, the 24th.
About 100 millimeters of heavy rain is thought to have fallen in the hour until 7:30 pm near Shibata City and Seigo Town, Niigata Prefecture.

The rainy season front is stationary near Niigata Prefecture, and rain is expected to continue into tomorrow, Saturday the 25th.
As warm, humid air flows towards the front, atmospheric conditions will become very unstable, and there will be some places with very heavy rain accompanied by thunder. If the rain clouds become stagnant or develop more than expected, there is a possibility that the area experiencing warning-level heavy rain may expand.
Please check the latest information and be prepared to take evacuation actions according to the alert level announced.



In Kaetsu, please be on high alert for landslides until dawn on Saturday the 25th.
In Niigata Prefecture, please be on alert for flooding of low-lying areas, rising water levels and flooding of rivers until late at night on the 25th (Saturday) tomorrow, and be alert for landslides into the 26th (Sunday). Also, be careful of strong wind gusts such as lightning and tornadoes.
If there are signs of a developing cumulonimbus cloud approaching, please take every precaution to ensure your safety, such as moving inside a building. There is also a risk of hail, so please be careful when managing crops and agricultural facilities.

#What is a weather disaster prevention bulletin (record-breaking heavy rain in a short period of time)

An announcement is made by the Japan Meteorological Agency when a short-term heavy rain that only occurs once every few years is observed or analyzed.

In order to make it known that the current rainfall is a rarely observed amount of rainfall that can lead to landslides, flooding damage, and flooding of small and medium-sized rivers in the area, the name of the observation point and city where the heavy rain was observed will be clearly stated if the rainfall standard is met and the "danger" (purple) status of the Kikikuru (risk distribution) has appeared during warning announcements regarding disasters during heavy rain.
Rainfall standards are generally determined for each prefecture and forecast area, with reference to the 1st or 2nd place in history for 1-hour rainfall.

#The areas where record-breaking heavy rain information was announced are...

It means that heavy rain is falling that can lead to landslides, inundation of low-lying land, and flooding.
Let's check where the risk of disaster occurrence is actually increasing using Kikikuru (risk distribution).

[Kanto] Is it safe to hold the Sumida River Fireworks Festival on the weekend with "the greatest risk of sudden weather changes" (Commentary: Weather forecaster Atsuko Miyake)

2026/07/24 14:33

From now until the weekend, the Kanto region will continue to experience unstable atmospheric conditions.
Even if the weather is sunny, be careful of sudden changes in the weather.




This is the forecast weather map from today (Friday) to the day after tomorrow (Sunday).
The front is expected to remain in a similar location for all three days.
A front is stationary from the Hokuriku region to the northern Kanto region, and
warm and humid air continues to flow toward this front from the south.

As a result, the atmosphere in the Kanto region remains unstable, making heavy rain and thunderstorms more likely.
Also, since the winds that move the rain clouds in the sky are weak,
there is a risk that it will continue to rain in similar places.
Please be careful about how it rains.



Now, let's take a look at the rain forecast.

After the evening, rain clouds may roll up from the mountains and may also flow into the plains.
It is likely that there will be heavy rain accompanied by thunder, or very heavy rain in some places.

In the Kanto region, 60mm of rain is expected per hour today.
This 60 mm is extremely heavy rain, falling like a waterfall.
In urban areas, if more than 50mm of rain falls per hour, the drainage will not be able to catch up and the roads will turn into rivers.
This is likely to be the way it rains.

A further 120 mm of rain is expected to fall by midday tomorrow (Saturday).
This 120mm of rain could fall all at once in just a few hours, so
Please be careful about landslides, rising and overflowing rivers, and flooding of low-lying areas.



When the date changes to tomorrow (Sat), the rain clouds are expected to disappear for a while.
Tomorrow morning, we may see some sunshine through the gaps in the clouds.

However, in the afternoon, rain clouds will start to form along the mountains.
Furthermore, rain clouds and thunderclouds may move into the plains from evening onwards.

There were also yellow and red signs in the southern Kanto region towards night.
There is a risk of heavy rain and very heavy rain depending on the location.

Please be careful of sudden changes in the weather tomorrow (Saturday) as well.



Saturday and Sunday weather.
There are almost no rain marks.
However, be careful of sudden changes in the weather both tomorrow and the day after.

Please think that there is a rain mark hidden behind this cloudy mark.
It's safe to bring rain gear when you go out.

And tomorrow (Saturday) there will be a fireworks festival on the Sumida River in Tokyo.
However, please don't be fooled by this cloudy mark and bring rain gear.


There is a risk of thunderstorms from tomorrow evening onwards.
If you hear thunder, try to move to a safe building.

And tomorrow (Saturday) it will continue to be hot and humid.
The temperature rises to 34c in Tokyo and 36c in Kumagaya and Maebashi. Please be careful of heat stroke.



Weekly forecast.
The sunny skies will return in the first half of next week.
The intense heat is likely to return in the second half.

Tokyo is also expected to experience another extremely hot day with temperatures exceeding 35c.
The intense heat is coming back, so
try to get in shape while the heat is still relatively strong in the first half of next week.