Arcahaie Weather in September
What's the weather like in Arcahaie (Nord-Ouest) in September 2025?
The climate in Arcahaie during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Arcahaie 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 | 30.3°C 86.5°F |
|---|---|
| Nightly temperature | 21.1°C 70°F |
| Average temperature | 25.7°C 78.3°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 168 mm 6.6 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 Arcahaie with around 168mm 6.6 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 hours of sunshine per day.
September temperatures in Arcahaie
September rainfall
September hourly sunshine
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 Arcahaie in September 2025.
Other monthly averages
Best places to visit in September
Arcahaie weather stats
| Hottest month: | August | 30.5°C 86.9°F |
|---|---|---|
| Driest month: | February | 47mm 1.9ins |
| Sunniest month: | February | 7.6hrs |
| Coldest month: | January | 26.6°C 79.9°F |
| Wettest month: | May | 180mm 7.1ins |
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