Annemasse Weather in September

September in Annemasse averages 20°C (68°F) during the day and 10°C (50°F) at night. Quite a bit of rainfall is typical this month, with around 120 mm (4.7 in) on average. An umbrella is a good idea.

Rainfall in Annemasse in September

Records from the past 30 years suggest around 12 days of rain, with 120 mm (4.7 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Annemasse in September

If you're visiting Annemasse in September, expect highs of 20°C (68°F) and overnight lows around 10°C (50°F). 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), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Annemasse in September

The city usually sees around 183 hours of sunlight, indicating a moderately sunny period.

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.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Annemasse.

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

Annemasse 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 120 mm (4.7 in)  

Rainy days 12 days  

Humidity 74% *  

Sunshine 183 hours *  

Percentage Sunshine 55% *  

* Data from: Geneva, Switzerland (6 KM, 4 Miles).

What to Wear in Annemasse in September

For Annemasse in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 20°C (68°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Annemasse 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

3/10

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 Annemasse's climate page.

More climate data for Annemasse

Temperature Rainfall Sunshine Humidity Water Temp

See the full Annemasse climate overview or explore weather in France.