Normal weather in Saint-Louis in September
The weather in Saint-Louis in September has an average temperature of around 26°C during the day. On average, September sees 37 mm of rain in Saint-Louis. The wind speed is 5 Beaufort and mainly comes from Southeast.
After August, September in Saint-Louis starts with a temperature of 25°C and ends around October at 27°C.
September averages for Saint-Louis
![]() | 26°C |
![]() | 27°C |
![]() | 25°C |
![]() | 37 mm |
![]() | 10 days |
Temperature per day in September in Saint-Louis
This graph shows the average daily maximum temperatures in September in Saint-Louis, indicated in degrees Celsius.
Precipitation per day in September in Saint-Louis
This graph shows the average daily precipitation in September in Saint-Louis, indicated in millimeters.
UV index per day in September in Saint-Louis
This graph shows the average daily UV index in September in Saint-Louis.
Yearly temperature in September in Saint-Louis
This graph shows the average yearly temperature in September in Saint-Louis, measured in degrees Celsius, over the past years.
Yearly total precipitation in September in Saint-Louis
This graph shows the average yearly precipitation in millimeters in September in Saint-Louis, over the past years.
Average daily weather in September
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Experiences with the weather in September in Saint-Louis
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Average weather in Saint-Louis per month
Click on a month below to see in detail how the weather typically is in Saint-Louis and what to expect. Based on the historical weather data of Saint-Louis, you can view the average temperature, precipitation, wind, and UV index for each day of the month.