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.

[Typhoon information] Triple typhoon: Okinawa region should pay attention to the trends of typhoons No. 18 and 20

2026/08/22 17:24

Today, the 22nd (Saturday), there are three typhoons around Japan: Typhoon No. 18, Typhoon No. 19, and Typhoon No. 20.
Typhoon No. 19 is not expected to have any direct impact on areas around Japan, but in the Okinawa region, caution and vigilance are required due to the rough weather caused by Typhoon No. 18 and Typhoon No. 20.



#Typhoon No. 18 22nd (Sat) 3:00 pm
===================/brStrength Strong
Center position Maria Na Islands
Movement direction, speed: northwest 20km/h
Central pressure: 965hPa
Maximum wind speed: 35m/s (near the center)
Maximum instantaneous wind speed: 50 m/s
==================/br
#Typhoon No. 19 22nd (Sat) 3:00 p.m.
==================/brCenter Location: Tonkin Sea
Movement direction, speed: Almost stagnant
Central pressure: 994hPa
Maximum wind speed: 18m/s (near the center)
Maximum instantaneous wind Speed 25m/s
==================

#Typhoon No.20 22nd (Sat) 3:00 pm
===================
Center location: Approximately 120km north-northwest of Miyakojima
Movement direction, speed: West-northwest, slowly
Central pressure: 998hPa
Maximum wind speed: 18m
s(near the center)
Maximum instantaneous wind speed 25m/s
===================

Typhoon No. 18 is in the Mariana Islands as of 3pm today. It is moving northwest at a speed of about 20 kilometers per hour with strong winds, and is expected to become a "very strong" force tomorrow, the 23rd (Sunday), moving towards the waters near Ogasawara.
In the Ogasawara Islands, you need to be careful of high waves and strong winds from tomorrow the 23rd (Sunday) to the 24th (Monday).
Typhoon No. 18 is then expected to move westward through the south of Japan and approach the Nansei Islands around the 25th (Tuesday).
The Okinawa region is expected to experience rough weather, including heavy rain and strong winds. You also need to be wary of high waves and storm surges.

In addition, the movement of Typhoon No. 18 is expected to slow near Okinawa, so there is a risk that the impact will be prolonged.
Depending on the path of Typhoon No. 18, the Kyushu region may also be affected.
Please check for future information.



Typhoon No. 19 is almost stationary in the Gulf of Tonkin as of 3pm today. It is expected to move towards southern China around the 26th (Wednesday), but it is unlikely to have a direct impact on areas near Japan.

As of 3pm today, Typhoon No. 20 is located north-northwest of Miyakojima and is moving slowly west-northwest. It is expected to move slowly westward and head towards the East China Sea on the 24th (Monday).
Atmospheric conditions in the Sakishima Islands have become extremely unstable due to the influence of moist air flowing into the tropical cyclone, and today, the 22nd (Saturday), extremely heavy rain is falling in some places in the Miyakojima and Yaeyama regions.
Typhoon No. 20 is moving slowly, so the impact may be long-lasting.
In the Sakishima Islands, be wary of landslides and flooding of low-lying areas. Also, be careful of rising river waters, strong gusts of wind such as lightning and tornadoes.

Typhoon No. 20 (Kenari) occurs - the 7th typhoon this month - Sakishima Islands are on alert for heavy rain

2026/08/22 14:21

At 12 noon today, the 22nd (Saturday), a tropical cyclone developing north-northwest of Miyakojima became Typhoon No. 20 (Kenari). This is the seventh typhoon this month, following typhoon No. 19 that occurred at 9am.

#Typhoon No. 20 22nd (Sat) 12:00
==================
Center location Approximately 90km
North-northwest of Miyakojima Movement West Slowly
Central pressure 998 hPa
Maximum wind speed 18 m/s (near the center)
Maximum instantaneous wind speed 25 m/s
==================



Typhoon No. 20 is expected to continue moving slowly westward near the Sakishima Islands. The movement is slow, and there is a risk that the impact will last for a long time, especially in the Sakishima Islands.
In the Sakishima Islands, extremely heavy rain of over 50 mm per hour and heavy rain of over 30 mm per hour is expected to fall in some places through tomorrow 23rd (Sunday), and as of 2:00 p.m., level 4 landslide warnings and level 3 heavy rain warnings have been announced in some places.
Depending on the degree of rain cloud development, there is a risk that the area where a Level 4 Danger Warning or Level 3 Warning will be issued may expand. Be extremely cautious of landslides and avoid flooding of low-lying areas. Also, please be careful of rising water levels in rivers.
Also in the main island of Okinawa, please be careful of lightning strikes, gusts of wind, and sudden heavy rain under cumulonimbus clouds that developed into tomorrow, the 23rd (Sunday).
In addition, strong southeasterly or southerly winds are expected to blow in the Okinawa main island region today, the 22nd, and in the Sakishima Islands until tomorrow, the 23rd (Sunday). In the main island of Okinawa and the Sakishima Islands, swells and high waves are expected to continue through tomorrow, the 23rd (Sunday), so please be careful of strong winds and high waves.



#Expected amount of rain (in places where there is a lot)
+Precipitation amount expected for 1 hour today, 22nd
Miyakojima region 50mm
Yaeyama region 50mm
+1-hour precipitation expected for tomorrow 23rd (Sunday)
Yaeyama region 40mm
+24-hour precipitation expected by 12:00 tomorrow 23rd (Sunday) Amount
Miyakojima region 100mm
Yaeyama region 120mm
+24-hour precipitation expected by 12:00 on the 24th (Monday) the next day
8 Shigeyama region 801mm

#Expected wind strength
+Maximum wind speed (maximum instantaneous wind speed) expected today on the 22nd
Okinawa main island region 15m/s ( 23m/s)
Miyakojima region 15m/s (23m/s)
Yaeyama region 15m/s (23m/s)
+Expected for tomorrow 23rd (Sunday) Maximum wind speed (maximum instantaneous wind speed)
Miyakojima region 15m/s (23m/s)
Yaeyama region 15m/s (23m/s)

#Expected Wave height (with swells)
Wave height expected for today, the 22nd
Okinawa main island region 3m
Miyakojima region 3m
Yaeyama region Wave height expected for tomorrow 23rd (Sunday)
Okinawa main island region 3m
Miyakojima region 3m
Yaeyama region 3m

Typhoon No. 19 (Nala) occurs, making it the 6th typhoon this month

2026/08/22 11:16

Typhoon No. 19 (Nala) occurred in the Gulf of Tonkin at 9 o'clock today, Saturday the 22nd. This is the sixth typhoon this month.

#Typhoon No.19 22nd (Sat) 9:00
=================
Center location Gulf of Tonkin
Movement Almost stagnant
Central pressure 994 hPa
Maximum wind speed 18 m/s (near the center)
Maximum instantaneous wind speed 25 m/s
==================



Typhoon No. 19 is expected to remain stationary near the Gulf of Tonkin, with little movement after this. It is expected to turn into a tropical cyclone on the 26th (Wednesday), and there is not expected to be any direct impact on Japan.

Today's 22nd (Saturday) weather: Be careful of sudden heavy rain in the Kanto area

2026/08/22 06:59

Due to the influence of the front, it will rain in the Kanto region, and there is a risk of heavy rain accompanied by localized thunderstorms. On the other hand, western Japan is expected to be covered in high pressure and continue to experience a harsh lingering summer heat.



Clouds are expected to spread in southern Tohoku, Hokuriku, and Kanto-Koshin due to the influence of the front, and rain is expected in places. As the atmospheric conditions become unstable, rain clouds may develop locally and there is a risk of heavy rain accompanied by thunder. Although the clouds are spreading, the temperature will be high, and it will be hot and humid at around 30 degrees Celsius during the day.
The strong sunlight will shine from the Tokai to the west, and the summer sky will expand. Temperatures will rise from early in the morning, and some places are likely to experience extreme heat with temperatures exceeding 35 degrees Celsius. The risk of heat stroke is greatly increased, so please be sure to drink plenty of water, take adequate rest, and refrain from prolonged outdoor activities.
Hokkaido and northern Tohoku will be covered by high pressure, so it will likely be sunny in many places. Temperatures are expected to be around 30c during the day, making it relatively comfortable.

National weekly weather from 8/22 to 8/28

2026/08/21 22:42

The severe heat is expected to continue across the country, and from the Tokai region to Kyushu, the intense heat is expected to continue. Typhoon No. 18 is expected to approach Okinawa and Amami around Wednesday the 26th. Please pay attention to the latest typhoon information.



Over the weekend, clouds will likely spread from southern Tohoku to eastern Japan, and it will rain in places. In the Kanto region, there is a risk of heavy rain with localized thunder. Please be careful of lightning strikes, tornadoes, strong gusts of wind, flooding of roads, and rising water in rivers. It is expected to be sunny in Hokkaido, northern Tohoku, and western Japan. Sunny skies will return to Okinawa on the 23rd (Sunday).
From the 24th (Monday) onwards, there will be many cloudy and rainy days in northern and eastern Japan. Rain is expected in Hokkaido on the 24th (Monday), with the rain gradually spreading southward. Rain is expected to occur across a wide area in northern Japan on the 25th (Tuesday) and 26th (Wednesday), and in eastern Japan on the 27th (Thursday). Okinawa will experience rough weather around the 26th (Wednesday) due to Typhoon No. 18.
The maximum temperature will be at or above normal, and the severe lingering heat is expected to continue across the country. From the Tokai region to Kyushu, there are likely to be many places with extremely hot days of 35 degrees Celsius or higher. The temperature does not drop much at night, and many places experience tropical nights. Please be careful not only about heatstroke during the day but also at night.

[Typhoon Information] Typhoon No. 18 is moving north-northwest through the Mariana Islands. Be careful of its future course.

2026/08/21 16:39

As of 3:00 pm on Friday the 21st, Typhoon No. 18 was moving north-northwest near the Mariana Islands at a speed of 20 kilometers per hour.

It is expected to become a strong force on the morning of tomorrow, the 22nd, and continue to move north-northwest.



It will become a very strong force on the 23rd, pick up speed slightly, change course to the west-northwest, and move toward the waters near Ogasawara.
In the Ogasawara Islands, please be careful of rising waves and strong winds from the 23rd to the 24th.

In addition, there is a risk that it will continue to maintain very strong strength and move west-northwest across the south of Japan, approaching the Okinawa region.
Depending on the path of the typhoon, there is a risk of heavy rain, heavy storms, and severe storms in the Daitojima region from the 24th to the 26th, and
warning-level heavy rain, heavy storms, and severe storms in the Okinawa main island region from the 25th to the 26th.

Please pay attention to the latest typhoon information that will be announced in the future.

Kanto-Koshin: Be wary of high temperatures from the weekend - take precautions against heatstroke

2026/08/21 15:57

The Kanto-Koshin region is expected to be widely covered by the
anticyclone from this weekend until the 27th (Thursday). As warmer than normal air flows into the sky above
and the
sunshine shines through, temperatures in various locations tend to rise significantly.



Furthermore, as Typhoon No. 18 is expected to move south of Japan, warm and humid air is expected to flow into the Kanto region.
As a result, there will be some extremely hot days with maximum temperatures of 35 C or higher, especially inland, and the severe heat is expected to continue.



In Kofu, the predicted maximum temperature on Saturday the 22nd is expected to be 35c, and on Tuesday the 25th, temperatures are expected to reach 38c in Kumagaya and 37c in Maebashi/Kofu, making it dangerously hot.
Even in central Tokyo, temperatures are expected to reach 35 degrees Celsius, raising the risk of heat stroke in a wide area.



High temperature conditions can last for several days, so it is essential to take measures to prevent heat stroke, such as frequent hydration, appropriate use of air conditioning, and avoiding long hours of work outdoors.
Refer to the heatstroke warnings that are announced and try to take reasonable actions to protect yourself from the heat.

Today, the afternoon of the 21st, watch out for sudden thunderstorms and heavy rain in the Kanto-Koshin region

2026/08/21 13:46

Today, the 21st (Friday), a front is extending from the Sea of Japan through the Tohoku region to the east of Japan.
Due to the influence of this front, developed rain clouds are covering the Tohoku-Hokuriku and Kanto-Koshin regions. Today in the morning, extremely heavy rain was observed at Wajima in Wajima City, Ishikawa Prefecture, with 74.0 mm, and in Nanto Takamiya in Nanto City, Toyama Prefecture, 69.0 mm.
In the Kanto-Koshin region, heavy rain of 43.0 mm was observed at Kasadake in Takayama Village, Kamitakai District, Nagano Prefecture, and 39.5 mm at Tokuda in Hitachiota City, Ibaraki Prefecture.



Atmospheric conditions in the Kanto-Koshin region are extremely unstable due to the effects of warm, humid air heading towards this front, rising temperatures during the day, and a trough in the atmospheric pressure above.
Currently, rain clouds have developed in Saitama and Chiba prefectures in the southern Kanto region, as well as the Tama region of Tokyo.



After this, rain clouds that have developed will move into central Tokyo, causing heavy rain and thunderstorms.
Please be careful and be on guard against flooding of low-lying areas, rising river waters, and landslides late into the evening of today, the 21st (Friday). Also be careful of strong wind gusts such as lightning and tornadoes.

Also, in the Kanto-Koshin region, the atmospheric conditions will be extremely unstable in the afternoon of tomorrow, the 22nd (Saturday), and there will be places where there will be heavy rain accompanied by thunder or very heavy rain. Please continue to be careful and vigilant.

[Rain Forecast]
The predicted 1-hour rainfall on Friday the 21st is high in the following areas:
Northern Kanto Region 50mm
Kanto Region Southern area: 40mm
Koshin region: 40mm
The predicted hourly rainfall on Saturday the 22nd is high,
Northern Kanto region: 30m m
Southern Kanto region 40mm
Koshin region 30mm
Forecasted from 12:00 p.m. on Friday the 21st to 12:00 p.m. on Saturday the 22nd 24-hour precipitation is high in the following areas: Northern Kanto region 100mm
Southern Kanto region 80mm
Koshin region 80mm