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Brittany weather in August

Thinking about venturing to Brittany this August and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Brittany in August?

Brittany is a region in France. August in Brittany generally has temperatures that range from pleasant to warm, with moderate precipitation. The month of August is in the summer season.

Based on our climate data spanning from 1990-2020, the average maximum temperature is pleasant in Porspoder at 19°C to warm in Varennes at 27°C. Nighttime temperatures generally drop to 15°C in Varennes and 16°C in Porspoder. On average, August is the month with the highest temperature of the year in Brittany.

In August, precipitation varies across different areas. From moderate rainfall in Locmaria with an average of 46 mm to moderate rainfall in Roz-sur-Couesnon with 70 mm. Meanwhile, Saint Malo enjoys close to 199 hours of sunlight. This means it's a great month if you prefer bright and sunny days.

For a closer look at August's conditions in Brittany, see the map below. For a more detailed look at Brittany's yearly weather, check out our Brittany climate page.

Where to go in Brittany in August

Find more information for the most popular destinations in the Brittany on the map below. Click on a destination dot for more detailes.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in August for the 5 most popular destinations in Brittany?

Saint Malo

In August Saint Malo generally has pleasant temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 16°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Saint Malo
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
21°C 
15°C 
206 hours 
56 mm 
10 days 
22°C 
16°C 
199 hours 
63 mm 
12 days 
20°C 
14°C 
169 hours 
76 mm 
13 days 
Climate in Saint Malo

Carnac

In August Carnac generally has pleasant temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 16°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Carnac
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
22°C 
16°C 
43 mm 
11 days 
22°C 
16°C 
49 mm 
13 days 
20°C 
14°C 
59 mm 
14 days 
Climate in Carnac

Rennes

In August Rennes generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 14°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Rennes
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
25°C 
14°C 
212 hours 
53 mm 
11 days 
25°C 
14°C 
205 hours 
54 mm 
12 days 
22°C 
11°C 
177 hours 
57 mm 
12 days 
Climate in Rennes

Brest

In August Brest generally has pleasant temperatures with maximum daytime temperatures around 21°C, minimum nighttime temperatures around 14°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Brest
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
20°C 
14°C 
229 hours 
56 mm 
13 days 
21°C 
14°C 
206 hours 
63 mm 
15 days 
19°C 
13°C 
168 hours 
64 mm 
15 days 
Climate in Brest

Perros-Guirec

In August Perros-Guirec generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 15°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Perros-Guirec
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
19°C 
15°C 
46 mm 
11 days 
20°C 
15°C 
56 mm 
13 days 
19°C 
14°C 
61 mm 
14 days 
Climate in Perros-Guirec

Is your destination not in the list? Have a look at other destinations in Brittany, in France.

Is August the best time to visit Brittany?

We believe that August is one of the best times to visit Brittany with overall perfect weather in Saint Malo. However, the weather conditions may vary depending on your destination.

Generally speaking, July, August and September provide perfect weather in Saint Malo. On the other hand, the weather in January and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Brittany. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to France? Get detailed historical weather averages for many cities in France.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.