Jōetsu Weather in September
What's the weather like in Jōetsu (Niigata) in September 2024?
The climate in Jōetsu during September can be summarized as warm, humid and very wet.
September is in the fall / autumn in Jōetsu and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 17°C (63°F) is normal.
| Daytime temperature | 25.8°C 78.4°F |
|---|---|
| Nightly temperature | 17.4°C 63.3°F |
| Average temperature | 21.6°C 70.9°F |
| Daily sunshine | 4.7 hrs |
| Avg rainfall | 211 mm 8.3 ins |
| Rainy days | 20 days |
| Sea temperature | 24°C 75.2°F |
| Humidity | 78% |
| Windspeed | 7.2kph 5 mph |
On average September is the 5th wettest month of the year in Jōetsu with around 211mm 8.3 inches of rain making it a very wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.7 hours of sunshine per day.
September temperatures in Jōetsu
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Jōetsu in September 2024.
Other monthly averages
Best places to visit in September
Jōetsu weather stats
| Hottest month: | August | 30.4°C 86.7°F |
|---|---|---|
| Driest month: | April | 89mm 3.5ins |
| Sunniest month: | May | 7.1hrs |
| Coldest month: | January | 4.9°C 40.8°F |
| Wettest month: | January | 345mm 13.6ins |
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