The climate in Slidell during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Slidell and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (87°F), whilst at night 20°C (68°F) is normal.
Daytime temperature | 30.4°C 86.7°F |
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Nightly temperature | 20.2°C 68.4°F |
Average temperature | 25.3°C 77.5°F |
Daily sunshine | 8 hrs |
Avg rainfall | 135 mm 5.3 ins |
Rainy days | 10 days |
Sea temperature | 28.3°C 83°F |
Humidity | 77% |
Windspeed | 11.5kph 7 mph |
On average September is the 6th driest month of the year in Slidell with around 135mm 5.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 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 Slidell in September 2024.
Best places to visit in September
Hottest month: | July | 32.4°C 90.3°F |
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Driest month: | October | 72mm 2.8ins |
Sunniest month: | October | 8.3hrs |
Coldest month: | January | 15.3°C 59.5°F |
Wettest month: | July | 163mm 6.4ins |