Climate in Saint-Brieuc: average temperature by month
In Saint-Brieuc the warmest month is August, with 22.0 °C on average in the afternoon; the coolest is January, with 9.7 °C.
The average of the weather stations Belle Ile - Le Talut (140 km), Pte De La Hague (147 km) and Nantes-Bouguenais (175 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 9.7 °C | 9.5 °C – 10.0 °C |
| February | 10.1 °C | 9.8 °C – 10.5 °C |
| March | 11.9 °C | 10.6 °C – 12.8 °C |
| April | 14.2 °C | 13.0 °C – 15.2 °C |
| May | 17.0 °C | 15.3 °C – 18.6 °C |
| June | 19.9 °C | 18.7 °C – 21.0 °C |
| July | 21.9 °C | 21.1 °C – 22.2 °C |
| August | 22.0 °C | 21.5 °C – 22.3 °C |
| September | 20.2 °C | 18.4 °C – 21.4 °C |
| October | 16.9 °C | 15.0 °C – 18.4 °C |
| November | 13.0 °C | 11.5 °C – 14.8 °C |
| December | 10.7 °C | 10.1 °C – 11.4 °C |