coastal destination · warmest in Aug · sea ~16°C in July · mid-range
Open Saint-Martin-Boulogne on the live value map →| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 5 | 5 | 7 | 9 | 12 | 14 | 17 | 18 | 15 | 12 | 8 | 6 |
| Sea °C | 9 | 8 | 8 | 9 | 11 | 14 | 16 | 18 | 18 | 16 | 13 | 11 |
| Rain (days) | 56 | 43 | 38 | 34 | 39 | 37 | 41 | 47 | 56 | 64 | 84 | 56 |
Warmest month: Aug. Driest: Apr.