Daytime highs, nighttime lows and the warmest cities in Brittany, France this May.
Brittany, France, a region in France, experiences maximum daytime temperatures in May ranging from 15°C (59°F) in Roscoff to 21°C (70°F) in Varennes. Nighttime temperatures generally drop to 10°C (50°F) in Varennes and 11°C (52°F) in Roscoff.
Explore the map below to discover average May temperatures at the top destinations in Brittany. For a deeper dive, simply click on any destination dot.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Brittany.
Marker color shows the average daytime high temperature in May: blue is cold, red is hot.
Saint Malo averages a daytime high of 17°C (63°F) in May, which is moderate for Brittany, France.
After dark, Saint Malo cools to about 11°C (52°F) on an average May night.
Varennes tops the warmest city list in our database with average maximum daytime temperatures around 21°C (70°F) and a minimum nighttime temperature of around 10°C (50°F).
When looking through our records, we find that Roscoff stands out as the coolest city in Brittany, France for the month of May. Daytime highs average 15°C (59°F) and it cools down to about 11°C (52°F) at night.
Across Brittany, France, sunshine in May ranges from moderately sunny in Saint Malo (189 hours) to sunny in Brest (212 hours).
The water temperature averages approximately 12°C (54°F) in Brest this month, generally too cold for comfortable swimming.
We have much more information about the climate in Brittany.
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