Cast Weather in September

September is one of the perfect months to visit Cast, with daytime temperatures of 20°C (68°F) and lows of 13°C (55°F) at night. Do note that quite a bit of rainfall is typical, averaging around 70 mm (2.8 in).

Rainfall in Cast in September

This month experiences about 15 days of rain according to historical data, averaging 70 mm (2.8 in). Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in Cast in September

Cast in September is worth a visit. The temperature is perfect, with 20°C (68°F) during the day and 13°C (55°F) at night. September is typically considered a summer month. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 13°C (55°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 Cast in September

The area enjoys a balanced 168 hours of sunlight, ensuring it's neither too overcast nor too sunny.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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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 Cast's climate page.

Cast Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 50%  

Precipitation 70 mm (2.8 in)  

Rainy days 15 days  

Humidity 85% *  

Sunshine 168 hours *  

Percentage Sunshine 45% *  

* Data from: Brest, France (38 KM, 23 Miles).

What to Wear in Cast 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. Wet weather is likely, so pack waterproof gear for multiple rainy days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Cast in September

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

Swimming

6/10

Cycling

10/10

Walking

10/10

Barbeque

7/10

Camping

8/10

Outdoor sports

10/10

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 Cast's climate page.

More climate data for Cast

Temperature Rainfall Sunshine Humidity

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