2025 First Fall Foliage Forecast: The best time to see autumn leaves is expected to be later than normal nationwide

2025/10/15 06:45

Today, the 15th (Wednesday), our company Sunny Spot announced the first forecast for the best time to see autumn leaves in 2025. Please use this as a reference when planning your next fall foliage viewing trip.

This summer has seen record high temperatures, combined with light rain in some places. This is thought to have an effect on the coloration of the leaves.

It is expected that the trend of high average temperatures across the country will continue. However, the weather tends to change periodically, and on sunny days in the morning and evening, radiation cooling is expected to lower the temperature necessary for leaves to change color.
The best time to see autumn leaves nationwide will be around normal or later than normal.



+Northern Japan (Hokkaido/Tohoku)
In Hokkaido, temperatures are expected to be lower than normal from mid-October to late October. For this reason, in many areas of Hokkaido, the colors will progress from mid-October to late October, and many places will be at their best. In the Tohoku region, temperatures will be lower than normal in late October due to the influence of cold air, but temperatures are likely to be higher than normal until early November. In many places, the best time to see the autumn leaves will be at or later than normal.

+Eastern Japan (Kanto-Koshin, Hokuriku, Tokai)
The average temperature is expected to remain higher than normal until early November. As a result, the best time to see the cherry blossoms is likely to be later than normal in many areas. Around November, it gets colder in the mornings and evenings, so the number of places along the mountains where the best time to see the cherry blossoms will be in late November will gradually increase. The best time to see them in the plains is probably in early December. The best time to see them in central Tokyo is expected to be around December 4th.

+Western Japan (Kinki, Chugoku, Shikoku, Kyushu)
Western Japan will be slow to change color due to the lingering heat that continues into October. Around November, the mornings become colder and the best time to see them is in many places, especially along the mountains. In the plains, it is expected that the weather will be similar to or later than normal in many places. In many places, the best time to see them is from late November to early December, and in Fukuoka, the best time to see them is around December 4th.

General Winter suddenly arrives. Northern Japan experiences "very low temperatures." Next week will be a "first snow rush" in the flatlands of Hokkaido [Early weather information]

2025/10/15 01:39

Today, October 14th (Tuesday), the Japan Meteorological Agency announced early weather information that temperatures from October 20th to 28th will be ``considerably low'' in Hokkaido and Tohoku,
while ``considerably high'' in Okinawa and Amami.



Looking at the weather map for the coming week, a low-pressure system is expected to rapidly develop and pass near Hokkaido from October 18th (Saturday) to October 19th (Sunday),
with the possibility of heavy storms and warning-level heavy rain mainly in northern Japan.

After this low pressure system passes, the area around Japan is expected to have a "high pressure pattern in the west and low pressure in the east."

There is strong cold air behind the low pressure system,
in the early part of next week, strong cold air is expected to flow into the skies over Hokkaido
, bringing snow on the flatlands.



On the 18th (Saturday), warm air will flow towards a low pressure system.
Any precipitation will likely turn into rain in many places.

However, on the 19th (Sunday), cold air is expected to flow into the northern Tohoku region, bringing snow on the
mountains with temperatures around 1,500 meters above 0c.

Furthermore, on Monday the 20th, cold air with temperatures below -6c will hit northern Hokkaido, bringing snow in the plains.

Since the beginning of this month,
cold air strong enough to cause snow to fall in the mountains of Hokkaido has flowed in several times,
but this is the first time that cold air strong enough to cause snow to fall even on the flatlands has flown in.
This season's first ``Winter General has arrived'' can be said.


The day before yesterday, October 12th (Sunday),
the highest temperature was recorded at 35.0c in Kimotsuki Maeda, Kimotsuki Town, Kagoshima Prefecture,
making it the latest "scorchingly hot day" in Japan, but
next week, winter air will suddenly arrive from the north.

It can be said that this year's "autumn" was quite short.

On the other hand, temperatures will continue to be high in Okinawa and Amami, and
in late October it is likely that some places will experience the highest temperatures in 10 years.

We continue to need to be careful about the heat in Okinawa and Amami.




Temperatures will continue to decline nationwide into next week.

In inland areas such as Asahikawa in Hokkaido, the forecast is for rain or snow from the 19th (Sunday).

The season will quickly progress into next week.
Please be careful not to get sick due to changes in temperature.

[New typhoon egg] Typhoon season continues Typhoon No. 23 will become an extratropical cyclone by tonight

2025/10/14 12:52

As of 9 a.m. today, October 14, strong Typhoon No. 23 is moving eastward in the east of Japan at a speed of 45 kilometers per hour.

Typhoon No. 23 is expected to become an extratropical cyclone far east of Japan by tonight.



Meanwhile, a new typhoon egg "tropical cyclone" is expected to form over the southern ocean.

Looking at the forecast weather map for the night of tomorrow, October 15th (Wednesday),
there is a tropical cyclone over the sea east of the Philippines.



A low pressure system consisting of warm air with a maximum wind speed of less than 17.2m/s near the
center is called a "tropical cyclone", and a low pressure system with
maximum wind speed of 17.2m/s or more is called a "typhoon".


It is not yet known whether the tropical cyclone that will form by tomorrow night will turn into a typhoon, but it is possible that it will continue to move west and affect Okinawa and the Sakishima Islands after the weekend.

Please continue to check the latest weather information.

Currently, Typhoon No. 23, which is located in the east of Japan, also approached Japan after forming in the Mariana Islands.
Please be aware that typhoons that form in the east of the Philippines and near the Mariana Islands in October often approach Japan.

October is still typhoon season.
Pay close attention to the trends of typhoons and tropical cyclones.

[New typhoon egg] Typhoon season continues Typhoon No. 23 will become an extratropical cyclone by tonight

2025/10/14 12:42

As of 9 a.m. today, October 14, strong Typhoon No. 23 is moving eastward in the east of Japan at a speed of 45 kilometers per hour.

Typhoon No. 23 is expected to become an extratropical cyclone far east of Japan by tonight.



Meanwhile, a new typhoon egg "tropical cyclone" is expected to form over the southern ocean.

Looking at the forecast weather map for the night of tomorrow, October 15th (Wednesday),
there is a tropical cyclone over the sea east of the Philippines.



When the maximum wind speed near the
center of a cyclone composed of warm air is less than 17.2m/s, it is called a "tropical cyclone", and when the
maximum wind speed is 17.2m/s or more, it is called a "typhoon".

This year's Typhoon No. 23 also occurred in the Mariana Islands and approached Japan.
Typhoons that form in the east of the Philippines and near the Mariana Islands in October often approach Japan, so you need to be careful.

October is still typhoon season.

It is not yet known whether the tropical cyclone that will form by tomorrow night will turn into a
typhoon, but it is possible that it will move westward and affect Okinawa and the Sakishima Islands after the
weekend.

Please continue to check the latest weather information.

[New typhoon egg] Typhoon season continues Typhoon No. 23 will become an extratropical cyclone by tonight

2025/10/14 12:42

As of 9 a.m. today, October 14, strong Typhoon No. 23 is moving eastward in the east of Japan at a speed of 45 kilometers per hour.

Typhoon No. 23 is expected to become an extratropical cyclone far east of Japan by tonight.



Meanwhile, a new typhoon egg "tropical cyclone" is expected to form over the southern ocean.

Looking at the forecast weather map for the night of tomorrow, October 15th (Wednesday),
there is a tropical cyclone over the sea east of the Philippines.



When the maximum wind speed near the
center of a cyclone composed of warm air is less than 17.2m/s, it is called a "tropical cyclone", and when the
maximum wind speed is 17.2m/s or more, it is called a "typhoon".

This year's Typhoon No. 23 also occurred in the Mariana Islands and approached Japan.
Typhoons that form in the east of the Philippines and near the Mariana Islands in October often approach Japan, so you need to be careful.

October is still typhoon season.

It is not yet known whether the tropical cyclone that will form by tomorrow night will turn into a
typhoon, but it is possible that it will move westward and affect Okinawa and the Sakishima Islands after the
weekend.

Please continue to check the latest weather information.

Strong typhoon No. 23 moves away from the Izu Islands, but watch out for high waves tonight

2025/10/13 19:00

As of 18:00 today, the 13th, strong typhoon No. 23 is moving eastward at a speed of 35 km/h in the southeastern Kanto region, moving away from the Izu Islands.

#Typhoon No. 23 13th (Monday) 18:00
==================/br Center position Southeast of Kanto
Strength Strong
Movement East 35km/h
Central pressure 975 hPa
Maximum wind speed 35 m/s (near the center)
Maximum instantaneous wind speed 50 m/s
==================



Typhoon No. 23 will continue to move eastward, and is expected to move east of Japan and away from the Izu Islands by early morning on the 14th tomorrow. In the Izu Islands, the impact of Typhoon No. 23 has diminished, but heavy swells and swells continue. Hachijo Town and Aogashima Village should be on alert for high waves with swells into late tonight.

#Expected wave height (with swells)
+Expected wave height for today, the 13th
Northern Izu Islands 4m
Southern Izu Islands 6m
+Forecasted wave height on tomorrow 14th
Southern Izu Islands 5m


In addition, the ground is loose in some places due to the heavy rains so far. Even after the rain has stopped, there is a risk of landslides, so please continue to exercise caution late tonight.

Meteorological satellite Himawari 9 disrupted as typhoon approaches

2025/10/13 11:52

The Japan Meteorological Agency announced that a disturbance occurred in the observation of the geostationary meteorological satellite "Himawari 9" from around 0:30 yesterday, October 12th.
For a time, it was impossible to observe all satellite images.

Although the exact cause is unknown, the observation equipment needs to be cooled down to a specified temperature in order to provide normal observation data, and as this cooling process requires additional time, it is expected that it will take some time before data provision starts.

This failure caused multiple content updates, including the Japan Meteorological Agency's website ``Meteorological Satellite Himawari,'' and the inability to distribute data outside the Japan Meteorological Agency.

On the same day, the Japan Meteorological Agency gradually switched over to observation by the standby Himawari-8, and from 22:00, provision to the Japan Meteorological Agency, other organizations, and private organizations resumed.

The Japan Meteorological Agency will continue to investigate the problem of "Himawari 9" and will continue to provide information via "Himawari 8" for the time being.

[Typhoon No. 23] Last day of the holidays, closest to the Izu Islands from dawn to noon, strict vigilance

2025/10/13 00:22

Typhoon No. 23 is approaching the Izu Islands, where the risk of disaster is increasing due to record heavy rain, strong winds, and high waves caused by Typhoon No. 22 on the 9th.
Please refrain from going out unless necessary and on the 13th (Monday), and be extremely cautious of the strong winds by staying away from windows when indoors. Also, be wary of high waves, landslides, flooding of low-lying areas, and rising and flooding rivers.

As of 23:00 on the 12th, Typhoon No. 23 is located approximately 270km west-southwest of Aogashima and is moving east-northeast at a speed of approximately 25km/hr.
Also, a front is extending from the Izu Islands to the east of Japan. In the Izu Islands, the atmospheric conditions are extremely unstable due to the influence of warm and humid air flowing towards the
front, and some places have already observed rainfall of over 100mm
from 11 a.m. on the 11th to 10 p.m. on the 12th.

[Rain commentary]
+Aogashima 153.0mm
+Miyakejima Tsubota 119.5mm




The typhoon is expected to move east-northeast over the southern coast of Honshu while developing strong winds, and is expected to be strong from dawn to noon on the 13th, approaching the Izu Islands, which was damaged by Typhoon No. 22.

In the Izu Islands, there is a risk that some utility poles may collapse and some buildings may be blown away over a wide area from the dawn of the 13th until the morning of the 13th due to the approaching typhoon.
There will be strong winds in some places.

[Wind Forecast] Maximum wind speed (maximum instantaneous wind speed)
13th (Monday)
+Izu Islands 35 meters (50 meters)

In the Izu Islands, from early morning until evening on the 13th, there will be places where there will be heavy swells and strong winds.

[Wave Forecast]
13th (Monday)
+Izu Islands 9 meters with swells
+Kanto region 4 meters with swells

In the Izu Islands, there are some places where it will rain heavily with thunder into the afternoon of the 13th,
, and there will be heavy rain in some places from early morning until the morning of the 13th.

[Rain forecast (in areas with a lot of rain)]
The predicted hourly precipitation on the 13th is
+Izu Islands 80mm
The 24-hour precipitation expected from 0:00 on the 13th to 0:00 on the 14th is
+Southern Kanto region 50mm
+Izu Islands 250mm

.
Please pay attention to typhoon information and disaster prevention information that will be announced in the future.

[Typhoon No. 23] Approaching the Izu Islands with "strong" force tomorrow morning, fear of new disasters due to fierce winds and heavy rain

2025/10/12 13:08

Typhoon No. 22 approached on the 9th of this month, causing record-breaking heavy rain, strong winds, and high waves.
A typhoon is approaching the Izu Islands once again.

With the repeated attacks of typhoons, the risk of disasters is increasing.
Especially on the 13th (Monday, a public holiday) when the typhoon approaches,
If you live in the Izu Islands, please refrain from going out unless necessary,
and be extremely cautious of the storm by staying away from windows when indoors.



Typhoon No. 23 was located south of Cape Muroto at noon today, Sunday, the 12th, and is moving northeast at 25km/hr.

The atmospheric pressure at the center is 980hPa, the maximum wind speed near the center is 30m/s,
the maximum instantaneous wind speed is 45m/s, and within a 75km radius from the center, the
wind speed is 25m/s or more.

Also, a front is extending from the south of Shikoku to the Izu Islands.
Atmospheric conditions in the Izu Islands are extremely unstable due to the influence of warm, humid air flowing toward the front.

The typhoon is expected to further develop after this and move east-northeast across the south of Japan,
with a strong wind field.

It is expected to become a "strong" force and approach the Izu Islands from dawn to noon on the 13th (Monday, holiday) tomorrow.

As the typhoon approaches, there will be strong winds in the Izu Islands from early morning to early morning on the 13th (Monday, holiday),
with the risk of some utility poles collapsing and
buildings being scattered over a wide area
.


[Wind forecast] Maximum wind speed (maximum instantaneous wind speed)
Today the 12th (Sunday)
Izu Islands 20 meters (30 meters)
Tomorrow the 13th (Monday/holiday)
Izu Islands: 35 meters (50 meters)


In the Izu Islands, there will be large and violent storms with
swells from early morning until evening on the 13th (Monday, holiday).

[Wave forecast]
Today the 12th (Sunday)
Izu Islands 5 meters with swells
Tomorrow the 13th (Monday/holiday)
Izu Islands 9 meters In addition, in the Izu Islands, there will be some places in the Izu Islands where there will be heavy rain or very heavy rain with thunder from late tonight until early afternoon on the 13th.

If the rain clouds develop more than expected or if the developed rain clouds continue to cover the area, the area where the warning is issued may expand.


[Rain forecast (for places with a lot of rain)]
The predicted hourly precipitation for today, the 12th (Sunday) is
Izu Islands 30mm
The predicted hourly precipitation for tomorrow the 13th (Monday/holiday) is
Izu Islands 70mm

Today 1 The 24-hour precipitation from noon on the 2nd (Sunday) to noon on the 13th (Monday/holiday) is
Izu Islands 200mm

24-hour precipitation from noon on the 13th (Monday/holiday) tomorrow to noon on the 14th (Tuesday) is
Izu Islands 50mm

.

In the Izu Islands, please be extremely cautious of strong winds, high waves with swells, landslides, flooding of low-lying areas, and rising and flooding rivers.

Please refrain from going out for non-essential reasons on the 13th (Monday/holiday) tomorrow,
take strict precautions against strong winds by staying away from windows when indoors, and
be careful of salt damage.

Also, be careful of strong gusts of wind such as lightning and tornadoes.

[Typhoon No. 23] Tomorrow, the 13th, the Izu Islands will experience strong rain and wind, and severe storms. Strict vigilance against heavy rain disasters, strong winds, high waves, etc.

2025/10/12 08:07

As of 6 a.m. today, the 12th, Typhoon No. 23 is moving northeast off the coast of Shikoku.

#Typhoon No.23 12th (Sunday) 6:00 am
===================
Center position Off the coast of Shikoku
Movement speed Northeast 20km/h
Central pressure 992 hPa
Maximum wind speed 25 m/s (near the center)
Maximum instantaneous wind speed 35 m/s
=================



Typhoon No. 23 is expected to advance east-northeast across the south of Japan as it continues to intensify, and will approach the Izu Islands from dawn to morning on the 13th. The central pressure of the typhoon at 6 a.m. tomorrow, the 13th, is expected to reach 980 hPa, the maximum wind speed near the center is 30 m/s, and the maximum instantaneous wind speed is expected to reach 45 m/s. Although it may not be as strong as Typhoon No. 22, which passed through the Izu Islands the other day, there is a risk of strong winds blowing that could overturn moving trucks.
Additionally, waves are expected to reach a height of 9 meters tomorrow, the 13th, and there is a risk of severe swells accompanied by swells.



In the Izu Islands, there will be places where heavy rain accompanied by thunder or very heavy rain will fall from late tonight until early afternoon on the 13th tomorrow. Due to the impact of the recent Typhoon No. 22, the ground has become loose in some areas, making the risk of landslides more likely.

In the Izu Islands, please take strict precautions against heavy rain disasters such as landslides, strong winds, and high waves until the 13th. There is a risk that the damage to buildings that were damaged by Typhoon No. 22 the other day may be further exacerbated, so please stay in a safe place and refrain from going out unless necessary.