Grilly weather in September (Rhône-Alps, France)

What can you expect from the weather in Grilly during September? This guide provides all the details you need.

In September, Grilly generally has pleasant temperatures and high rainfall. Daytime temperatures hover around 20°C, while nights can cool down to about 10°C.

Grilly in September usually receives high rainfall, averaging around 129 mm for the month. Typically around 12 days of rainfall is expected.

The area experiences a moderate amount of sunshine, with approximately 183 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. June, July, August and September generally stand out with the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.

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

 

Grilly, monthly averages in September

Min Temperature 10°C  

Max Temperature 20°C  

Chance of Rain 41%  

Precipitation 129 mm  

Rainy days 12 days  

Humidity 74% *  

Sunshine 183 hours *  

Percentage Sunshine 55% *  

* Data from: Geneva, Switzerland (13 KM, 8 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 Grilly in September?

For visitors traveling to Grilly, 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

6/10

Outdoor sports

9/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Grilly.

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.