Arc 1800 Weather in September

September in Arc 1800 sees daytime temperatures around 13°C (55°F) and lows of 3°C (37°F) at night. With around 107 mm (4.2 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Arc 1800 in September

You can expect rain on around 14 days based on historical patterns, with 107 mm (4.2 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Arc 1800 in September

September in Arc 1800 brings typical temperatures with highs around 13°C (55°F) and lows of 3°C (37°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights fall to 3°C (37°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Arc 1800 in September

Expect sunny days throughout the month, with an estimated 190 hours of sunshine. Despite the cool temperatures, the sunny skies make it a pleasant time to visit Arc 1800.

September in Arc 1800 has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.

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• January
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For a detailed overview over the year and the best time to visit France, check out our Arc 1800's climate page.

Arc 1800 Temperature in September

Min Temperature 3°C (37°F)  

Max Temperature 13°C (55°F)  

Chance of Rain 45%  

Precipitation 107 mm (4.2 in)  

Rainy days 14 days  

Sunshine 190 hours *  

Percentage Sunshine *  

* Data from: Chamonix-Mont-Blanc, France (38 KM, 24 Miles).

What to Wear in Arc 1800 in September

Pack for changing conditions in Arc 1800 in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Arc 1800 in September

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

Swimming

5/10

Cycling

5/10

Walking

5/10

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 Arc 1800's climate page.

More climate data for Arc 1800

Temperature Rainfall Sunshine

See the full Arc 1800 climate overview or explore weather in France.