The climate in Suriānwān during September can be summarized as very hot, humid and very wet.
September is in the fall / autumn in Suriānwān and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 34°C (92°F), whilst at night 25°C (76°F) is normal.
Daytime temperature | 33.6°C 92.4°F |
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Nightly temperature | 24.5°C 76°F |
Average temperature | 29°C 84.2°F |
Daily sunshine | 6 hrs |
Avg rainfall | 206 mm 8.1 ins |
Rainy days | 9 days |
Sea temperature | 26.7°C 80.1°F |
Humidity | 78% |
Windspeed | 5.8kph 4 mph |
On average September is the 3rd wettest month of the year in Suriānwān with around 206mm 8.1 inches of rain making it a very wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
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 Suriānwān in September 2025.
Best places to visit in September
Hottest month: | June | 39.4°C 102.9°F |
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Driest month: | April | 4mm 0.2ins |
Sunniest month: | November | 8.6hrs |
Coldest month: | January | 23.5°C 74.3°F |
Wettest month: | July | 297mm 11.7ins |