The average daily temperature in Brittany all through May is 12 with highs being 18 degrees celsius and a low of 10 degrees. With the details being further below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 18 |
| Low Temperature | 10 |
| Sunshine Per Day | 6 |
Useful Links: Brittany Weather: Average Weather & Yearly Climate