Saint-Germain-en-Laye weather in September (Ile de France, France)

How does the weather in Saint-Germain-en-Laye usually fare in September? Check out our in-depth weather guide for this month.

Temperatures

Experience perfect weather in Saint-Germain-en-Laye during September, featuring pleasant temperatures and moderate rainfall. The temperature during the day can rise to approximately 22°C. At night, it falls to around 11°C.

Precipitation

Saint-Germain-en-Laye in September usually receives moderate rainfall, averaging around 52 mm for the month. Take advantage of the driest month of the year with its minimal rain. Historically, the month has about 12 days of rain.

Average sunshine

The area enjoys a balanced 172 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. May, June, July, August and September typically offer the most optimal weather. In contrast, January, February and December tend to have less optimal conditions.

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

 

Saint-Germain-en-Laye, monthly averages in September

Min Temperature 11°C  

Max Temperature 22°C  

Chance of Rain 40%  

Precipitation 52 mm  

Rainy days 12 days  

Humidity 77% *  

Sunshine 172 hours *  

Percentage Sunshine 44% *  

Data from: Paris, France (27 KM, 16 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-Germain-en-Laye, 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

10/10

Walking

10/10

Camping

8/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Saint-Germain-en-Laye.

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.