Saint-Louis weather in September (Alsace, France)

What can you expect from the weather in Saint-Louis during September? Check out this comprehensive weather guide.

In Saint-Louis the weather in September is generally perfect, characterized by pleasant temperatures and moderate rainfall. Daytime temperatures hover around 21°C, while nights can cool down to about 10°C.

Saint-Louis in September usually receives moderate rainfall, averaging around 95 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 12 days of the month will see rainfall.

The city usually sees around 162 hours of sunlight, indicating a moderately sunny period.

So this is a great month to visit if you prefer dry days with pleasant temperatures. September typically offers the most optimal weather. In contrast, January, February, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Saint-Louis climate page with graphs.

 

Saint-Louis, monthly averages in September

Min Temperature 10°C  

Max Temperature 21°C  

Chance of Rain 41%  

Precipitation 95 mm  

Rainy days 12 days  

Humidity 77% *  

Sunshine 162 hours *  

Percentage Sunshine 47% *  

* Data from: Basel, Switzerland (3 KM, 2 Miles).

Where to go in France in September

Find out more about the weather in France in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Saint-Louis in September?

For visitors traveling to Saint-Louis, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Saint-Louis.

Our site offers climate and forecast data for every country in the world. Are you going to France? On this website you can find historical weather averages for many cities in France. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.