The climate in Kourou during September can be summarized as hot, humid and reasonably dry.
September is in the fall / autumn in Kourou and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 23°C (73°F) is normal.
Daytime temperature | 32.5°C 90.5°F |
---|---|
Nightly temperature | 22.7°C 72.9°F |
Average temperature | 27.6°C 81.7°F |
Daily sunshine | 8.8 hrs |
Avg rainfall | 46 mm 1.8 ins |
Rainy days | 5 days |
Sea temperature | 28.3°C 82.9°F |
Humidity | 80% |
Windspeed | 5.8kph 4 mph |
On average September is the driest month of the year in Kourou with around 46mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.8 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 Kourou in September 2025.
Best places to visit in September
Hottest month: | September | 32.3°C 90.1°F |
---|---|---|
Driest month: | September | 46mm 1.8ins |
Sunniest month: | October | 8.8hrs |
Coldest month: | January | 28.8°C 83.8°F |
Wettest month: | May | 473mm 18.6ins |