Saint Julien Weather in September
What's the weather like in Saint Julien (Flacq) in September 2025?
The climate in Saint Julien during September can be summarized as warm and damp.
September is in the spring in Saint Julien and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around 23°C (74°F), whilst at night 16°C (60°F) is normal.
| Daytime temperature | 23.4°C 74.1°F |
|---|---|
| Nightly temperature | 15.8°C 60.4°F |
| Average temperature | 19.6°C 67.3°F |
| Daily sunshine | 6.9 hrs |
| Avg rainfall | 100 mm 4 ins |
| Rainy days | 12 days |
| Sea temperature | 23.4°C 74.1°F |
| Humidity | 79% |
| Windspeed | 14.4kph 9 mph |
On average September is the 2nd driest month of the year in Saint Julien with around 100mm 4 inches of rain making it a damp 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 6.9 hours of sunshine per day.
September temperatures in Saint Julien
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 Saint Julien in September 2025.
Other monthly averages
Best places to visit in September
Saint Julien weather stats
| Hottest month: | February | 27.9°C 82.2°F |
|---|---|---|
| Driest month: | October | 91mm 3.6ins |
| Sunniest month: | May | 7hrs |
| Coldest month: | August | 22.4°C 72.3°F |
| Wettest month: | February | 397mm 15.6ins |
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