The climate in Grande Anse during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Grande Anse and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 23°C (73°F) is normal.
|Daytime temperature||30.5°C 86.8°F|
|Nightly temperature||23°C 73.3°F|
|Average temperature||26.7°C 80.1°F|
|Daily sunshine||7.7 hrs|
|Avg rainfall||175 mm 6.9 ins|
|Rainy days||18 days|
|Sea temperature||28.9°C 84°F|
|Windspeed||16.2kph 10 mph|
On average September is the 3rd wettest month of the year in Grande Anse with around 175mm 6.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.7 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 Grande Anse in September 2021.
|Hottest month:||July||30.7°C 87.3°F|
|Driest month:||February||56mm 2.2ins|
|Coldest month:||January||28.3°C 82.9°F|
|Wettest month:||October||214mm 8.4ins|