Yuzhno-Sakhalinsk Weather in September
What's the weather like in Yuzhno-Sakhalinsk (Sakhalin) in September 2025?
The climate in Yuzhno-Sakhalinsk during September can be summarized as mild and damp.
September is in the fall / autumn in Yuzhno-Sakhalinsk and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 15.9°C 60.6°F |
|---|---|
| Nightly temperature | 8.7°C 47.7°F |
| Average temperature | 12.3°C 54.1°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 115 mm 4.5 ins |
| Rainy days | 15 days |
| Sea temperature | 16.5°C 61.7°F |
| Humidity | 80% |
| Windspeed | 14.8kph 9 mph |
On average September is the 2nd wettest month of the year in Yuzhno-Sakhalinsk with around 115mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
September temperatures in Yuzhno-Sakhalinsk
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 Yuzhno-Sakhalinsk in September 2025.
Other monthly averages
Best places to visit in September
Yuzhno-Sakhalinsk weather stats
| Hottest month: | August | 19°C 66.2°F |
|---|---|---|
| Driest month: | February | 43mm 1.7ins |
| Sunniest month: | February | 5.7hrs |
| Coldest month: | January | -10.6°C 12.9°F |
| Wettest month: | August | 117mm 4.6ins |
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