Chens-sur-Léman Weather in September

Chens-sur-Léman in September averages 20°C (68°F) during the day and 10°C (50°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Chens-sur-Léman in September

Looking at the last 30 years, the data shows about 12 days with rain, averaging 121 mm (4.8 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Chens-sur-Léman in September

Temperatures in Chens-sur-Léman in September top out at 20°C (68°F) and drop to 10°C (50°F) overnight. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Chens-sur-Léman in September

You can expect a moderate amount of sunlight, with approximately 183 hours. This means a pleasant mix of sun and overcast.

Average water temperature in September

At 20°C (68°F), the water is pleasant for swimming. Most people find this range ideal — cool enough to be refreshing, warm enough to stay in comfortably.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Chens-sur-Léman.

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Chens-sur-Léman Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 20°C (68°F)  

Water Temperature 20°C (68°F) *  

Chance of Rain 40%  

Precipitation 121 mm (4.8 in)  

Rainy days 12 days  

Humidity 74% *  

Sunshine 183 hours *  

Percentage Sunshine 55% *  

* Data from: Geneva, Switzerland (16 KM, 10 Miles).

What to Wear in Chens-sur-Léman in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 20°C (68°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Chens-sur-Léman in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit France, check out our Chens-sur-Léman's climate page.

More climate data for Chens-sur-Léman

Temperature Rainfall Sunshine Humidity Water Temp

See the full Chens-sur-Léman climate overview or explore weather in France.