Casteljau Weather in September

In Casteljau, September brings high daytime temperatures around 24°C (75°F), with nights cooling to 12°C (54°F). Expect quite a bit of rainfall this month.

Rainfall in Casteljau in September

Historically, September sees about 8 days of rain, with a monthly average of 142 mm (5.6 in). 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 Casteljau in September

Temperatures in Casteljau in September top out at 24°C (75°F) and drop to 12°C (54°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Casteljau in September

Expect sunny days throughout the month, with an estimated 222 hours of sunshine. This makes it a pleasant time to visit Casteljau.

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

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

Casteljau Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 28%  

Precipitation 142 mm (5.6 in)  

Rainy days 8 days  

Humidity 72% *  

Sunshine 222 hours *  

Percentage Sunshine *  

* Data from: Montélimar, France (48 KM, 30 Miles).

What to Wear in Casteljau in September

For Casteljau 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Casteljau in September

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

Swimming

9/10

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 Casteljau's climate page.

More climate data for Casteljau

Temperature Rainfall Sunshine Humidity

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