Saint-Louis in September
8.0out of 10
Yes, a good time to go
Warm and comfortable: highs around 30°C. Some rain: about 7 rainy days.
30°CAvg high
27°CAvg low
7Rainy days (52 mm)
12:05 hDaylight
06:58Sunrise · 19:03 Sunset
Why this score
- Warm and comfortable: highs around 30°C
- Some rain: about 7 rainy days
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in September varies a lot between years (±3.5 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 25°C | 19°C | 3 mm | 0 | – | – | 9.1 |
| February | 25°C | 19°C | 1 mm | 0 | – | – | 9.1 |
| March | 25°C | 19°C | 0 mm | 0 | – | – | 9.1 |
| April | 25°C | 19°C | 0 mm | 0 | – | – | 9.1 |
| May | 25°C | 21°C | 0 mm | 0 | – | – | 9.1 |
| June | 27°C | 23°C | 1 mm | 0 | – | – | 9.1 |
| July | 28°C | 25°C | 11 mm | 2 | – | – | 8.8 |
| August | 29°C | 26°C | 57 mm | 8 | – | – | 8.0 |
| September | 30°C | 27°C | 52 mm | 7 | – | – | 8.0 |
| October | 30°C | 26°C | 13 mm | 2 | – | – | 8.5 |
| November | 29°C | 24°C | 0 mm | 0 | – | – | 9.0 |
| December | 27°C | 21°C | 2 mm | 0 | – | – | 9.1 |
Frequently asked questions
How hot is Saint-Louis in September?
Daytime highs average 30°C and nights about 27°C.
When is the best time to visit Saint-Louis?
The best months are January, February, March, April.