Brest Weather in September

September in Brest brings pleasant temperatures, with highs of 19°C (66°F) and nights dropping to 13°C (55°F). Rainfall is on the higher side this month, averaging around 64 mm (2.5 in), so keep a rain jacket handy.

Rainfall in Brest in September

You can expect rain on roughly 15 days based on historical data, averaging 64 mm (2.5 in) for the month. With rain spread across many days but low totals, showers are typically short and light rather than heavy.

Temperature in Brest in September

In September, Brest sees pleasant temperatures, with highs of 19°C (66°F). Nights drop to around 13°C (55°F). The month of September belongs to the summer season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 13°C (55°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Brest in September

You can expect a moderate amount of sunlight, with approximately 168 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Brest in September

In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

Average water temperature in September

With water at 15°C (59°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.

Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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 Brest's climate page.

Brest Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 19°C (66°F)  

Water Temperature 15°C (59°F)  

Chance of Rain 51%  

Precipitation 64 mm (2.5 in)  

Rainy days 15 days  

Humidity 85%  

Windspeed 4 m/s (8 knots)  

Sunshine 168 hours  

Percentage Sunshine 45%  

What to Wear in Brest in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Expect water temperatures of around 15°C (59°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Brest 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 Brest's climate page.

More climate data for Brest

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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