Extremely strong typhoon No. 18 approaches the Nansei Islands; Okinawa and Amami are on high alert for strong winds and high waves until tomorrow the 26th

2026/08/25 07:06

As of 6 a.m. today, the 25th (Tuesday), extremely strong Typhoon No. 18 is located approximately 50 km east of Minami Daito Island and is moving west-northwest at a speed of approximately 20 km per hour.

#Typhoon No. 18 25th (Tue) 6:00
==================/br Center location Minamidaito Island Approximately 50km
east of hPa
Maximum wind speed 45 m/s (near the center)
Maximum instantaneous wind speed 60 m/s
==================



The typhoon is very strong and is approaching the Daitojima region, where it has entered the storm area.

#Wind report
Maximum instantaneous wind speed and maximum wind speed from 00:00 yesterday 24th to 04:00 today 25th (Breaking news by AMeDAS) Value Unit: m/s)
Kitadaito Airport
Maximum instantaneous wind speed 42.2m/s North-Northeast (03:25 on the 25th)
Maximum wind speed 27.5m/s North-northeast (03:57 on the 25th)

The typhoon is expected to continue moving westward, approaching the main island of Okinawa and the Amami region with strong force into tomorrow, the 26th (Wednesday), and moving westward across the East China Sea into the 27th (Thursday). Since the typhoon will gradually slow down as it moves forward, there is a risk that the effects of the typhoon will be prolonged. In addition, atmospheric conditions will become extremely unstable, with heavy rain of more than 30 mm or more than 50 mm per hour, resulting in heavy rain in some places.

Strict vigilance is required in the Okinawa and Amami regions due to strong winds and high waves accompanied by swells into tomorrow, the 26th (Wednesday). As the typhoon approaches, fierce winds are expected to blow that may cause some houses to collapse. Please move to a sturdy building before the wind picks up and stay away from windows when indoors. In southern Kyushu, please be careful of high waves accompanied by swells today, the 25th.
Also, in the Amami region, please be extremely careful about landslides tomorrow, the 26th (Wednesday).
In the Okinawa and Amami regions, please be careful of landslides, flooding of low-lying areas, rising river waters, and storm surges from tomorrow until the 27th (Thursday). You also need to be careful of strong wind gusts such as lightning and tornadoes.




#Expected wind strength
+Maximum wind speed (maximum instantaneous wind speed) expected for today, 25th
Amami region 40m/s (60m/s)
Okinawa region 45m/s (60m/s)
+Maximum wind speed (maximum instantaneous wind speed) expected for tomorrow 26th (Wednesday)
Amami region 40m/s (60m/s)
Okinawa region 40m/s (60m/s)

#Expected wave height (With swells)
+Height of waves expected today on the 25th
Southern Kyushu 6m
Amami region 10m
Okinawa region 11m
+Estimated wave height for tomorrow 26th (Wednesday)
Amami region 10m
Okinawa region 10m

#Expected amount of rain (in places where there is a lot)
+Precipitation expected for 24 hours by 6 o'clock tomorrow 26th (Wednesday)
Amami region 250mm
Okinawa region 170mm
+24-hour precipitation expected by 6:00 a.m. on the 27th (Thursday) the next day
Amami region 50mm
Okinawa region 60mm
+24-hour precipitation expected by 6:00 on Friday the 28th
Okinawa region 50mm

Today's 25th (Tuesday) weather: Northern Japan is prone to rain; Okinawa is experiencing rough weather.

2026/08/25 06:17

Today, the 25th (Tuesday), the front is expected to move south across northern Japan. Additionally, as Typhoon No. 18 approaches, Okinawa is expected to experience increasingly rough weather.



It's a day of rain in Hokkaido and northern Tohoku due to fronts and low pressure. Please be careful as there are places where there will be heavy rain with thunderstorms. Please bring rain gear when going out.

It will be sunny in many places from the southern Tohoku region to Kyushu, and today is another day when it is essential to take precautions against heat stroke. It will be dangerously hot, especially in western Japan, exceeding body temperature, and in Kyushu, Kurume, Hita, and Kumamoto are expected to experience extremely hot days with temperatures reaching 40 degrees Celsius. Please be careful of heatstroke by refraining from activities in hot weather, drinking plenty of water and salt, and using air conditioning.
A very hot day is expected in central Tokyo, and it is likely to be the first extremely hot day in 23 days since the 2nd.

As the typhoon approaches, the rain and wind will gradually become stronger in Okinawa, and there is a risk of rough weather. Please be extremely cautious of strong winds and high waves accompanied by swells. Also, please be careful of landslides, flooding of low-lying areas, rising river waters, and storm surges. The typhoon is expected to move at a slower pace, and its effects are likely to continue into tomorrow, the 26th. Please be fully prepared for the typhoon.

Weather for the week: Okinawa is devastated by the approach of Typhoon No. 18; late summer heat is severe in western and eastern Japan

2026/08/24 13:27

From now on, northern Japan will be susceptible to fronts and low pressure systems. Western and eastern Japan will be covered in high pressure on many days, and western Japan in particular is expected to have fewer rainy days.



Typhoon No. 18 is expected to pass near Daito Island with very strong force on the 25th (Tuesday) tomorrow, and will approach Okinawa with strong force around the 26th.
In Okinawa, the wind will gradually become stronger from today, the 24th, and the waves will become higher at sea. There is a risk of strong winds on the 25th and 26th, with strong winds that could cause some houses to collapse. Typhoon No. 18 is expected to gradually slow down as it moves forward, and its effects may linger until around the 28th.
In Okinawa, please be extremely cautious of strong winds, high waves with swells, landslides caused by heavy rain, and flooding of low-lying areas, and be sure to check the latest typhoon information in the future.



On the other hand, the area around Honshu, northern Japan, is susceptible to the effects of low pressure and fronts, and tomorrow, the 25th (Tuesday), the rain will become stronger around noon when the low pressure passes, and localized heavy rain is likely.
In the afternoon, the sky will be unstable, with the possibility of sudden rain and thunderstorms mainly in the inland and mountainous areas from Tohoku to Kinki. Please be aware of sudden changes in the weather.

Around the 27th (Thursday), an autumn rain front will be stationary near Honshu, and the front is expected to bring rain to many places in northern and eastern Japan. Since the northern side of the front will have autumn air, northern Japan will experience short-term weather changes and the heat will gradually ease in some places.



Western and eastern Japan are easily covered by high pressure in the summer, resulting in days of severe lingering heat. In eastern Japan, there will likely be some days when the heat will ease somewhat as the front moves south, but western Japan will continue to be covered in summer high pressure, and in places like Kyushu, it is expected to continue to be around 35 degrees Celsius.
In western Japan, many places, especially in Kyushu, are already receiving less than 20% of normal rainfall, but it will continue to be less susceptible to the effects of humid air, and it is unlikely that the rain will be heavy enough to overcome the low rainfall. You need to be careful not to get heatstroke due to the severe lingering heat, but also be careful about water management and crop management.

[Typhoon information] Typhoon No. 21 (Assani) occurs, making it the 8th typhoon this month

2026/08/24 11:14

At 9 a.m. today, the 24th (Monday), a tropical cyclone developing in the east of the Philippines became Typhoon No. 21 (Assani). This is the 8th typhoon this month.
Typhoon No. 21 is moving northeast at a speed of approximately 25 kilometers per hour.



Typhoon No. 21 will continue to move northeast, then change its course to the north, and is expected to turn into a tropical cyclone east of the Philippines tomorrow, the 25th (Tuesday).
Currently, it is not expected to develop much, and it is unlikely to have an impact near Japan.

#Typhoon No. 21 24th (Monday) 9:00 a.m.
==================
Center location East of the Philippines
Moving direction and speed Northeast 25 km/h
Central pressure 998hPa
Maximum wind speed 18m/s (near the center)
Maximum instantaneous wind speed 25m/s
==================

Weather forecast for tomorrow 24th (Monday): Severe summer heat in western and eastern Japan; inland areas should be careful of sudden changes in weather from the afternoon

2026/08/23 18:37

Tomorrow, the 24th (Monday), the end of the week, western and eastern Japan will be largely covered by a summer high-pressure system.
Western and eastern Japan is experiencing a severe lingering heat in a wide area, and in areas west of the Tokai Sea, it is likely that the heat will approach 40 degrees Celsius. In eastern Japan, there are many places in the Kanto-Koshin region where the temperature will be higher than on the 23rd, and there will be places where it will be an extremely hot day with temperatures exceeding 35c.
Please continue to take precautions against heat stroke.



The weather will be downhill in northern Japan due to the influence of a low pressure front. Rain is expected to begin in the afternoon in Hokkaido and Tohoku, with localized heavy rain accompanied by thunderstorms.
Also in the mountains and inland areas of eastern and western Japan, please be aware of sudden changes in the weather from the afternoon. In some inland parts of the Kanto-Koshin and Tokai regions, the predicted probability of lightning occurring at 6 pm tomorrow is expected to reach nearly 90% in some places, and tall rain clouds and thunderclouds are likely to develop. Be careful of flooding roads and sudden rises in rivers due to sudden heavy rain.In particular, in the Kanto region, a strong earthquake occurred in the early hours of the 23rd, so please be careful of landslides even with low rainfall.



Multiple typhoons are occurring near Japan. In the Ogasawara Islands, please be careful of high waves caused by swells from Typhoon No. 18. Typhoon No. 18 is expected to approach the vicinity of Okinawa around the 25th or 26th, and the waves are expected to be high in some parts of Okinawa from tomorrow. There is a risk of severe damage in the Daitojima region, and the winds will gradually become stronger, so please be careful of strong winds and high waves.



In the Sakishima Islands of Okinawa, heavy rain will continue until dawn due to the influence of rain clouds that have developed due to Typhoon No. 20. The ground is loose in some places due to heavy rain, so please be careful of landslides.

The lingering heat is severe mainly in western Japan.The heat is expected to return tomorrow, Monday, the 24th, in eastern Japan as well.

2026/08/23 18:17

Today, the 23rd (Sunday), is the 24th solar term, ``Shotatsu''. It is said to be the time when the intense heat subsides and the air turns cool in the mornings and evenings.
However, the area around Honshu was widely covered by high pressure, and many places in particular west of the Tokai region experienced extremely hot days with temperatures exceeding 35 degrees Celsius.



Although no location recorded an extremely hot day of 40 degrees Celsius or higher, there were places in western Japan where the temperature reached dangerously high temperatures on the verge of an extremely hot day.
As of 5 p.m. today, the 23rd (Sunday), the highest temperatures were 39.2c in Akiota Town, Hiroshima Prefecture, and 39.2c in Otsu City, Shiga Prefecture, setting the highest temperature ever recorded in Otsu. In Hita City, Oita Prefecture, where the predicted maximum temperature was expected to be 40 degrees Celsius by noon, the temperature rose to 39.1 degrees Celsius, making it extremely hot.
The top locations for daily maximum temperature are occupied by western Japan. In Kumamoto, the temperature rose to 38.4 degrees Celsius, and Fukuoka, Osaka, and Nagoya also had extremely hot days with temperatures exceeding 35 degrees Celsius.
Clouds spread over central Tokyo, and the maximum daytime temperature was 30.8c, which was not as hot as in western Japan, but the humidity was high and it felt hot and humid.



At the end of the week, tomorrow the 24th (Monday), areas west of the Tokai Sea will continue to experience dangerous heat. The predicted maximum temperature is 40 degrees Celsius in Hita City, Oita Prefecture, and 38 degrees Celsius in Kurume City, Fukuoka Prefecture, and Nara, so the heat is far from calming down and the harsh lingering heat continues.
Eastern Japan will be covered by high pressure and will receive strong sunlight, and there will be places where it will be even hotter than today, the 23rd (Sunday). It is expected to be a very hot day with temperatures reaching 36 degrees Celsius in Kumagaya City, Saitama Prefecture, and 36 degrees Celsius in Kofu, Yamanashi Prefecture.In central Tokyo, it is expected to be 34 degrees Celsius, and depending on the situation, it may be a very hot day with temperatures exceeding 35 degrees Celsius.

Please continue to take precautions against heat stroke, drink plenty of water and salt, and take adequate breaks if you are active outdoors.

[Typhoon information] Strong typhoon No. 18 (Soudel) is moving west-northwest near Ogasawara and is likely to approach Okinawa considerably after the 25th (Tuesday)

2026/08/23 13:29

As of 12 noon today, Sunday, the 23rd, strong typhoon No. 18 is moving west-northwest in the waters near Ogasawara. After this, it will strengthen its power and is expected to develop into a ``very strong'' force by 9pm. After that, it will weaken slightly, but on the 25th (Tuesday) it will remain strong and approach the Daitojima region of Okinawa Prefecture, and from the 26th (Wednesday) onwards, it is expected to approach Okinawa and Amami with strong force.




As the typhoon approaches, Okinawa and Amami are expected to experience heavy rain and severe weather.
Please take measures as early as possible, such as evacuation of items that are easily blown away, and securing food and power sources.

Also, in the Yaeyama region of Okinawa, there are already heavy rains due to Typhoon No. 20, and even if Typhoon No. 20 passes, there is a risk of heavy rain again in the middle of the week. Strict vigilance is required to prevent landslides and flooding of low-lying land.
Also, you should be wary of high waves accompanied by swells along the coast.

The wind and wave forecast until the 25th is as follows.

[Wind forecast]
Wind direction and maximum wind speed (maximum instantaneous wind speed) expected on the 24th
Daitojima region Northeast 18 meters (30 meters)
Wind direction and maximum wind speed expected on the 25th (maximum instantaneous wind speed)
Daitojima region Northeast then east 35 meters (50 meters)
Okinawa main island region Northeast 25 meters (35 meters)

[Wave forecast]
Wave height expected on the 24th
Offshore Nawa Main Island region 3 meters with swells
Daitojima region 6 meters with swells
Wave height expected on the 25th
Okinawa Main Island region 7 meters with swells
Daitojima region 11 meters with swells
Miyakojima region 5 meters with swells
Yaeyama region 3 meters with swells

Please continue to check the latest typhoon information from time to time.

[Typhoon information] Typhoon No. 20 (Kenari) slowly moves westward, Yaeyama region is on high alert for heavy rain

2026/08/23 12:55

As of 9 a.m. today, the 23rd (Sunday), Typhoon No. 20 (Kenari) is moving slowly westward over the sea approximately 110 km north-northwest of Yonaguni Island. The central pressure is 998hpa, the maximum wind speed near the center is 18m/s, and the maximum instantaneous wind speed is 25m/s.



-----------------------------------
Type Typhoon
Size -
Strength -
Existence area Approximately 110km north-northwest of Yonaguni Island
Center location Latitude 25 25'N (25.4 ) Longitude 122 35'E (122.6 )
Direction of travel, speed West Slowly
Central pressure 998 hPa
Maximum wind speed near center 18 m/s (35 kt)
Maximum instantaneous wind speed 25 m/s (50 kt)
--------------------------------------

From early morning to early morning today, heavy rain of 21mm per hour was observed on Yonaguni Island.

AMeDAS Ishigakijima had a rainfall of 186.5mm in the 24 hours up to 9am, and the cumulative rainfall is approaching 200mm.
This typhoon is moving slowly, so there is a risk that it will continue to rain intermittently in the Yaeyama Islands until tomorrow, the 24th (Monday).
We need to be on guard against flooding in low-lying areas, rising water in rivers and irrigation canals, and landslides due to heavy rain.


[Rain Forecast]
The predicted 24-hour precipitation from 6:00 am on the 23rd to 6:00 am on the 24th is expected to be 180mm

in the Okinawa region.
If a linear precipitation band occurs, there is a risk that there will be even more rainfall locally.

Please pay attention to evacuation information from local governments and take actions that prioritize safety.

4 typhoons occurring at the same time Typhoon No. 18 approaches Okinawa from 25th to 27th

2026/08/23 07:19

There are currently three typhoons on the weather map.
Also, there is a tropical cyclone to the east of the Philippines, which is expected to develop into a typhoon by the afternoon of the 23rd.



Of these, Typhoon No. 18 is expected to have a major impact on Japan.
Strong typhoon No. 18 was near Ogasawara at 06:00 on the 23rd and was moving west-northwest at a speed of about 30 km per hour.
The central pressure is 950 hPa, the maximum wind speed near the center is 40 m, and the maximum instantaneous wind speed is 60 m.

Typhoon No. 18 is expected to move west-northwest over the southern seas of Japan and approach the Okinawa region with very strong or strong force from the 25th to the 27th.



In the Okinawa region, please be extremely cautious of strong winds and high waves accompanied by swells. Depending on the typhoon's path, there is a risk of warning-level heavy rain and storm surge in the main island of Okinawa and the Sakishima Islands. It is necessary to take early typhoon countermeasures before the winds get stronger.

[Wind forecast]
Wind direction and maximum wind speed (maximum instantaneous wind speed) expected on the 24th
Daitojima region Northeast 17 meters (30 meters)

Wind direction and maximum wind speed (maximum instantaneous wind speed) expected on the 25th
Daitojima region Northeast and then east 35 meters Toru (50 meters)
Okinawa Main Island Region Northeast 23 meters (35 meters)

[Wave forecast]
Forecast on the 24th Wave height
Okinawa main island region 3 meters with swells
Daitojima region 6 meters with swells
Miyakojima region 2.5 meters with undulations
Yaeyama region 3 meters with undulations

25 Expected wave height
Okinawa main island region 7 meters with swells
Daitojima region 11 meters swells
Miyakojima region 5 meters with swells
Yaeyama region 3 meters with swells

In the Okinawa region, the winds are expected to gradually strengthen from the 24th,
to become a storm in the Daitojima region on the 25th, and in the Okinawa main island region around the 26th.
There is a possibility of strong winds that could knock down some utility poles and scatter parts of buildings over a wide area.
Please refrain from going out unless necessary, stay away from windows when indoors, and take extreme precautions against strong winds.

Depending on the path of the typhoon, there is a risk of strong winds in the Sakishima Islands around the 26th to 27th.
Please take early typhoon measures before the winds get stronger.

Large and intense storms are expected to occur in the Daito Island region from the 24th to the 26th,
in the Okinawa main island region from around the 25th,
in the Sakishima Islands from around the 26th.
Please be extremely cautious of high waves accompanied by swells.

Depending on the path of the typhoon, there is a risk of warning-level heavy rain in the main island of Okinawa from around the 26th and
in the Sakishima Islands around the 27th.
Also, there is a risk that warning level storm surge will occur in the Okinawa main island region from the 25th and in the Miyakojima region from around the 26th.

[Half-a-day forecast] Okinawa Yaeyama region: Linear rain belt likely to occur from dawn to dusk on the 23rd

2026/08/23 07:12

In the vicinity of the Sakishima Islands in Okinawa, extremely unstable atmospheric conditions are expected to continue through the 23rd due to Typhoon No. 20 and the moist air flowing into the typhoon.

[Rain Forecast]
The predicted hourly precipitation on the 22nd is high in the following locations:
Miyakojima region 30mm
Yaeyama region 50mm

The predicted 1-hour precipitation on the 23rd is high in some places,
Yaeyama region 50mm

The 24-hour precipitation expected from 18:00 on the 22nd to 18:00 on the 23rd is In many places,
Miyakojima region 80 mm
Yaeyama region 120 mm
After that, the expected 24 hours from 18:00 on the 23rd to 18:00 on the 24th In the Okinawa region, where precipitation is high, Yaeyama region 80 mm

, linear precipitation bands may occur and the risk of heavy rain disasters may increase rapidly.
If a linear precipitation band occurs, there is a risk of heavy rain exceeding the predicted precipitation amount above.

[Time period when you need to be careful in the linear precipitation zone]
(Okinawa region) Yaeyama region, from dawn to dusk on the 23rd

Please be extremely cautious of landslides, and be careful of inundation of low-lying areas, rising water levels, and flooding of rivers.
Also, be careful of strong gusts of wind such as lightning and tornadoes.



Due to the slow movement of the typhoon, there is a risk that the impact will be prolonged.
Please keep in mind the latest information in the future.