Region, France
Brittany weather by month and the best time to visit
When to go to Brittany
June–September is warmest and driest, but July–August is crowded. Spring is green and quieter; autumn and winter bring rain, storms and closures on the coast.
Brittany weather by month
Average daily high, rainfall and conditions.
- Jan8°69 mm
- Feb9°58 mm
- Mar12°57 mm
- Apr16°46 mm
- May19°58 mm
- Jun23°50 mm
- Jul24°48 mm
- Aug24°47 mm
- Sep22°42 mm
- Oct17°75 mm
- Nov12°77 mm
- Dec9°80 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 8°C47°F | 2°C36°F | 69 mm | 92% | Cold |
| February | 9°C49°F | 2°C35°F | 58 mm | 88% | Cold |
| March | 12°C54°F | 3°C38°F | 57 mm | 84% | Cool |
| April | 16°C60°F | 5°C42°F | 46 mm | 79% | Cool |
| May | 19°C66°F | 8°C47°F | 58 mm | 78% | Pleasant |
| June | 23°C73°F | 12°C53°F | 50 mm | 76% | Pleasant |
| July | 24°C76°F | 13°C56°F | 48 mm | 74% | Pleasant |
| August | 24°C76°F | 13°C56°F | 47 mm | 75% | Pleasant |
| September | 22°C71°F | 11°C51°F | 42 mm | 76% | Pleasant |
| October | 17°C63°F | 8°C47°F | 75 mm | 85% | Cool |
| November | 12°C54°F | 6°C42°F | 77 mm | 90% | Cool |
| December | 9°C48°F | 3°C37°F | 80 mm | 93% | Cold |
Best months across France
| Place | Best months | Warmest month |
|---|---|---|
| Paris | Apr–Jun, Sep–Oct | Jul (25°C) |
| Nice | May–Jun, Sep–Oct | Aug (26°C) |
| Provence | May–Jun, Sep–Oct | Jul (32°C) |
| French Riviera | May–Jun, Sep–Oct | Aug (26°C) |
| Lyon | Apr–Jun, Sep–Oct | Jul (28°C) |
| Marseille | Apr–Jun, Sep–Oct | Jul (33°C) |
| Bordeaux | May–Jun, Sep–Oct | Aug (28°C) |
| Cannes | May–Jun, Sep–Oct | Jul (30°C) |
| Strasbourg | May–Jun, Sep–Oct, Dec | Jul (27°C) |
| Chamonix | Jun–Sep, Dec–Mar | Jul (22°C) |
| Annecy | May–Jul, Sep | Jul (26°C) |
| Corsica | May–Jun, Sep–Oct | Aug (30°C) |
| Aix-en-Provence | Apr–Jun, Sep–Oct | Jul (32°C) |
| Toulouse | Apr–Jun, Sep–Oct | Jul (30°C) |
| Loire Valley | May–Jun, Sep–Oct | Jul (27°C) |
| Normandy | May–Jul, Sep | Jul (23°C) |
| Montpellier | Apr–Jun, Sep–Oct | Jul (30°C) |
| Avignon | Apr–Jun, Sep–Oct | Jul (33°C) |
| Biarritz | May–Jun, Sep–Oct | Aug (27°C) |
| Colmar | May–Jun, Sep–Oct | Jul (27°C) |
| Saint-Tropez | May–Jun, Sep | Jul (30°C) |
| Antibes | May–Jun, Sep–Oct | Jul (30°C) |
| Nantes | May–Sep | Jul (25°C) |
| Lille | May–Sep | Jul (23°C) |
| Carcassonne | Apr–Jun, Sep–Oct | Jul (31°C) |
| Brittany | Jun–Sep | Jul (24°C) |
| Dordogne | May–Jun, Sep–Oct | Aug (28°C) |
Quick answers
What is the best month to visit Brittany?
Jun–Sep. June–September is warmest and driest, but July–August is crowded. Spring is green and quieter; autumn and winter bring rain, storms and closures on the coast.
When is the rainy season in Brittany?
Rain peaks in December with about 80 mm. No month averages 150 mm or more.
What is the hottest month in Brittany?
July, with average highs of 24°C (76°F).
How cold does Brittany get?
The coolest nights are in February, averaging 2°C (35°F).
More about Brittany
Going to Brittany solo?
SoloSquare is where travelers, nomads and locals in Brittany meet up for small plans: coffee, dinners, walks and day trips. Join one, or start your own in a minute.
Sources
- NASA POWER climatology (2001–2020)
- Rennes Airport: bus
- Bolt cities in France
- La Cordée Rennes
- CHU de Rennes
- Brittany tourism
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.