The climate in Clinton during September can be summarized as warm, humid and damp.
September is in the fall / autumn in Clinton and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (84°F), whilst at night 17°C (62°F) is normal.
Daytime temperature | 28.8°C 83.8°F |
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Nightly temperature | 16.6°C 61.9°F |
Average temperature | 22.7°C 72.9°F |
Daily sunshine | 8.1 hrs |
Avg rainfall | 120 mm 4.7 ins |
Rainy days | 8 days |
Sea temperature | 27.1°C 80.8°F |
Humidity | 78% |
Windspeed | 13kph 8 mph |
On average September is the 3rd wettest month of the year in Clinton with around 120mm 4.7 inches of rain making it a damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.1 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 Clinton in September 2025.
Best places to visit in September
Hottest month: | July | 31.8°C 89.2°F |
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Driest month: | October | 73mm 2.9ins |
Sunniest month: | April | 9.5hrs |
Coldest month: | January | 11.3°C 52.3°F |
Wettest month: | July | 168mm 6.6ins |