Port Louis Weather in September
What's the weather like in Port Louis (Port Louis) in September 2025?
The climate in Port Louis during September can be summarized as warm, humid and reasonably dry.
September is in the spring in Port Louis and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a muggy 25°C (76°F), whilst at night 17°C (62°F) is normal.
| Daytime temperature | 24.6°C 76.3°F |
|---|---|
| Nightly temperature | 16.5°C 61.7°F |
| Average temperature | 20.6°C 69°F |
| Daily sunshine | 7.3 hrs |
| Avg rainfall | 64 mm 2.5 ins |
| Rainy days | 12 days |
| Sea temperature | 23.4°C 74.1°F |
| Humidity | 79% |
| Windspeed | 14.5kph 9 mph |
On average September is the 2nd driest month of the year in Port Louis with around 64mm 2.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.3 hours of sunshine per day.
September temperatures in Port Louis
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 Port Louis in September 2025.
Other monthly averages
Best places to visit in September
Port Louis weather stats
| Hottest month: | February | 28.8°C 83.8°F |
|---|---|---|
| Driest month: | October | 60mm 2.4ins |
| Sunniest month: | May | 7.4hrs |
| Coldest month: | August | 23.5°C 74.3°F |
| Wettest month: | February | 293mm 11.5ins |
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