Japan in september: average Weather, Temperature and Climate, Where to go?
Weather in Japan in september 2025
Below, you have access to the weather forecast for the month of september for most popular cities in Japan. These datas are statistics for september from weather reports for over 10 years. The percentage indicates the possibility of having the weather mentioned.
Average weather in september in Tokyo
good weather UV index: 7
Weather at 6am
74°F
Clear/Sunny
34% of time
26%
18%
12%
Weather at 12pm
83°F
Clear/Sunny
38% of time
26%
23%
8%
Weather at 6pm
79°F
Clear/Sunny
39% of time
27%
20%
10%
Weather at 3am
76°F
32%
29%
17%
15%
Where to go in Japan in september?
Where to go in Japan in september: destination map
Where to go in each region in september?
| Chūbu (Nagoya, Kanazawa, Nagano...) | 72°F to 85°F | 8 à 13 days | 77°F to 79°F | tolerable weather* |
| Chūgoku (Hiroshima, Okayama, Izumo...) | 77°F to 83°F | 6 à 12 days | 79°F to 81°F | good weather* |
| Hokkaidō (Sapporo (Hokkaido), Hakodate, Abashiri...) | 65°F to 72°F | 5 à 10 days | 63°F to 70°F | good weather |
| Kansai (Osaka, Kyoto, Kobe...) | 77°F to 85°F | 7 à 13 days | 79°F to 83°F | tolerable weather* |
| Kantō (Tokyo, Hakone, Nikko...) | 77°F to 83°F | 6 à 11 days | 74°F to 81°F | good weather* |
| Kyushu (Fukuoka, Kagoshima (Kyushu), Nagasaki...) | 79°F to 85°F | 8 à 13 days | 79°F to 85°F | tolerable weather* |
| Ogasawara (Ogasawara Islands...) | 85°F | 9 days | good weather | |
| Okinawa (Naha, Nago, Miyakojima...) | 85°F to 86°F | 10 à 13 days | 83°F to 85°F | tolerable weather* |
| Shikoku (Kochi, Tokushima, Takamatsu...) | 79°F to 83°F | 8 à 13 days | 81°F to 83°F | tolerable weather* |
| Tōhoku (Sendai (Honshu), Aomori, Akita...) | 72°F to 77°F | 5 à 10 days | 70°F to 76°F | good weather |
Where should you go in Japan in september when it comes to the weather?
Remember:
The climate in Japan in september ranges from good to tolerable depending on the region and city.
Climatic conditions in Japan are improving as rainfall continues to decline and temperatures continue to decrease while a pleasant heat favors the atmosphere - especially in the daytime. Most of the time, the climate throughout September in Japan is pleasant.
North of Japan in September
Lower temperatures result in freshness and the appearance of morning fog on the island of Hokkaido. Even if rainfall regresses slightly, it is still present - especially in the daytime.
The Center of Japan in September
All locations on the Honshu Island are favored by a pleasant weather in Japan throughout September. The heat is comfortable from morning until night, despite the foggy mornings of Kyoto and Sendai.
South-West of Japan in September
The islands of the south see their climate improve considerably. Climatic conditions in Kagoshima allow to enjoy beautiful sunny days. Even if the heat in Naha is still high, the days are generally pleasant.
Climate in Japan in september
Climate in Tokyo in september
In the month of september, maximum temperature is 83°F and minimum temperature is 74°F (for an average temperature of 79°F). The climate quite enjoyable in this city in september. With 5.5in over 6 days, you will experience some showers during your trip. But this is pretty reasonably and it is only of temporary showers.
With good weather conditions, the month of september is a good month to go in Tokyo in Japan.
| September | |||
| Average temperature | 79°F | ||
| Highest temperature | 83°F | ||
| Lowest temperature | 74°F | ||
| Sea temperature | 78°F | ||
| Rainfall | 5.5in | ||
| Number of days with rainfall | 6 day(s) (22%) | ||
| Humidity | 80% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 42% | ||
| Length of day | 12:25 | ||
| Our opinion at whereandwhen.net | good |
Climate in Fukuoka in september
In september, the mean temperature in Fukuoka is 77°F (maximum temperature is 83°F and minimum temperature is 72°F). The climate quite enjoyable in this city in september. With 8.9in over 9 days, rainfall can happen during your journey. But this is rather reasonably and you will not be too bothered by it.
With a good weather, the month of september is a good month to go in this locality in Japan.
| September | |||
| Average temperature | 77°F | ||
| Highest temperature | 83°F | ||
| Lowest temperature | 72°F | ||
| Sea temperature | 79°F | ||
| Rainfall | 8.9in | ||
| Number of days with rainfall | 9 day(s) (30%) | ||
| Humidity | 86% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 41% | ||
| Length of day | 12:23 | ||
| Our opinion at whereandwhen.net | good |
Climate in Hiroshima in september
In the month of september, maximum temperature is 83°F and minimum temperature is 67°F (for an average temperature of 76°F). The climate enjoyable around this city in this month. With 8.3in over 8 days, rainfall can happen during your trip. But this is reasonably and you will not be too bothered by it.
With good weather conditions, september is a good time to go in Hiroshima.
| September | |||
| Average temperature | 76°F | ||
| Highest temperature | 83°F | ||
| Lowest temperature | 67°F | ||
| Sea temperature | 78°F | ||
| Rainfall | 8.3in | ||
| Number of days with rainfall | 8 day(s) (28%) | ||
| Humidity | 92% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 40% | ||
| Length of day | 12:24 | ||
| Our opinion at whereandwhen.net | good |
Climate in Kochi in september
In the month of september, the mean temperature in Kochi is 77°F (maximum temperature is 83°F and minimum temperature is 72°F). The climate good there in this month. With 8.5in over 8 days, you risk getting wet slightly throughout your journey. But this is rather moderate and it is only of temporary showers.
With good weather conditions, the month of september is a good month to go in this locality in Japan.
| September | |||
| Average temperature | 77°F | ||
| Highest temperature | 83°F | ||
| Lowest temperature | 72°F | ||
| Sea temperature | 81°F | ||
| Rainfall | 8.5in | ||
| Number of days with rainfall | 8 day(s) (25%) | ||
| Humidity | 87% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 37% | ||
| Length of day | 12:24 | ||
| Our opinion at whereandwhen.net | good |
Climate in Kyoto in september
In september, maximum temperature is 83°F and minimum temperature is 68°F (for an average temperature of 76°F). The climate nice in that area in september. With 9.6in over 9 days, you risk getting wet slightly for your trip. But this is pretty moderate and it is only of temporary showers.
With a good climate, september is a good month to go in this city.
| September | |||
| Average temperature | 76°F | ||
| Highest temperature | 83°F | ||
| Lowest temperature | 68°F | ||
| Rainfall | 9.6in | ||
| Number of days with rainfall | 9 day(s) (30%) | ||
| Humidity | 92% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 48% | ||
| Length of day | 12:24 | ||
| Our opinion at whereandwhen.net | good |
All cities in Japan in september
| Tokyo in september | good weather |
| Fukuoka in september | good weather |
| Hiroshima in september | good weather |
| Kochi in september | good weather |
| Kyoto in september | good weather |
| Nagoya in september | good weather |
| Okinawa in september | good weather |
| Osaka in september | good weather |
| Sapporo (Hokkaido) in september | good weather |
| Abashiri in september | good weather |
| Akita in september | good weather |
| Aomori in september | good weather |
| Hakodate in september | good weather |
| Hakone in september | good weather |
| Ogasawara Islands in september | good weather |
| Izumo in september | tolerable weather |
| Kagoshima (Kyushu) in september | tolerable weather |
| Kanazawa in september | tolerable weather |
| Kobe in september | tolerable weather |
| Miyakojima in september | tolerable weather |
| Nagano in september | good weather |
Weather data for Japan in september:
Weather data for Japan in september is derived from an average of the weather forecast since 2009 in Japan. There is a margin of error and these forecasts are to be considered as general information only. The weather in Japan can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Japan.