Brittany weather

Our guide to the weather in Brittany during August

22

Average high

4

UV Index

71mm

Monthly rainfall

80%

Humidity

We've looked at the most up-to-date weather data for Brittany, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Brittany weather in August.

How warm is it in Brittany during August?

August is typically the warmest month in Brittany. The temperature reaches around 22℃ during the daytime, falling away to 12℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Brittany during August?

On average, there will be 4 rainy days during the month, amounting to 70.8mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Brittany during August?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in August. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.

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Weather in Brittany

Our month-by-month guide to the weather and climate in Brittany

8.4

Brittany weather in

January
8.9

Brittany weather in

February
11.3

Brittany weather in

March
13.8

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April
16.5

Brittany weather in

May
19.6

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June
21.8

Brittany weather in

July
22.1

Brittany weather in

August
20.5

Brittany weather in

September
16.3

Brittany weather in

October
11.9

Brittany weather in

November
9.2

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December