The climate in Fond Bassin Bleu during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Fond Bassin Bleu and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (87°F), whilst at night 21°C (70°F) is normal.
Daytime temperature | 30.4°C 86.6°F |
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Nightly temperature | 20.9°C 69.5°F |
Average temperature | 25.6°C 78.1°F |
Daily sunshine | 7.1 hrs |
Avg rainfall | 178 mm 7 ins |
Rainy days | 15 days |
Sea temperature | 29.3°C 84.7°F |
Humidity | 78% |
Windspeed | 9.4kph 6 mph |
On average September is the 3rd wettest month of the year in Fond Bassin Bleu with around 178mm 7 inches of rain making it a wet 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 7.1 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 Fond Bassin Bleu in September 2025.
Best places to visit in September
Hottest month: | August | 30.5°C 86.9°F |
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Driest month: | January | 53mm 2.1ins |
Sunniest month: | February | 7.6hrs |
Coldest month: | January | 26.6°C 79.9°F |
Wettest month: | May | 208mm 8.2ins |