Lannion Climate: Weather by Month and Best Time to Visit
Best months for Lannion: July, August, June, September.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 9°C | 7°C | 104 mm | 17 | – | – | 4.7 |
| February | 9°C | 6°C | 88 mm | 14 | – | – | 5.1 |
| March | 10°C | 7°C | 70 mm | 13 | – | – | 5.4 |
| April | 11°C | 8°C | 70 mm | 12 | – | – | 5.8 |
| May | 14°C | 11°C | 58 mm | 10 | – | – | 6.4 |
| June | 16°C | 13°C | 48 mm | 9 | – | – | 7.0 |
| July | 18°C | 15°C | 42 mm | 9 | – | – | 7.2 |
| August | 18°C | 15°C | 50 mm | 10 | – | – | 7.2 |
| September | 17°C | 14°C | 55 mm | 10 | – | – | 7.0 |
| October | 15°C | 12°C | 97 mm | 15 | – | – | 5.9 |
| November | 12°C | 10°C | 115 mm | 17 | – | – | 5.1 |
| December | 10°C | 8°C | 128 mm | 17 | – | – | 4.6 |