Saint-Louis weather in September (Alsace, France)

Thinking of visiting Saint-Louis in September? Check the weather first! Want to know if this month is ideal for visiting? Our guide provides detailed weather information.

Temperatures

During September, Saint-Louis experiences perfect weather, with pleasant temperatures and moderate rainfall. Daytime temperatures are expected to be around 21°C, cooling off to about 10°C at night.

Precipitation

Saint-Louis in September usually receives moderate rainfall, averaging around 95 mm for the month. Looking at the last 30 years, the data shows about 12 days with rain.

Average sunshine

The area enjoys a balanced 162 hours of sunlight, ensuring it's neither too overcast nor too sunny.

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 and which places have the best travel 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 this month?

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.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

This site 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 travel conditions. Find out where to go with our weather planner.