Click on a day for an hourly weather forecast
The temperatures in Lannion in January are quite cold with temperatures between 6°C and 9°C, warm clothes are a must.
You can expect rain for roughly half of the month of January in Lannion. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Please note that Lannion can expect a few days of snow in January.
Our weather forecast can give you a great sense of what weather to expect in Lannion in January 2026.
If you’re planning to visit Lannion in the near future, we highly recommend that you review the 14 day weather forecast for Lannion before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 6° | 11 | 19 | 2 | 147 mm | Awful | Lannion in January |
| February | 9° / 5° | 10 | 17 | 2 | 125 mm | Awful | Lannion in February |
| March | 10° / 6° | 7 | 23 | 1 | 90 mm | Bad | Lannion in March |
| April | 12° / 7° | 5 | 24 | 0 | 84 mm | Ok | Lannion in April |
| May | 14° / 9° | 5 | 26 | 0 | 82 mm | Good | Lannion in May |
| June | 17° / 12° | 5 | 25 | 0 | 94 mm | Good | Lannion in June |
| July | 19° / 14° | 5 | 26 | 0 | 75 mm | Good | Lannion in July |
| August | 19° / 14° | 6 | 25 | 0 | 93 mm | Good | Lannion in August |
| September | 18° / 13° | 4 | 26 | 0 | 68 mm | Good | Lannion in September |
| October | 16° / 11° | 7 | 24 | 0 | 121 mm | Ok | Lannion in October |
| November | 12° / 9° | 9 | 21 | 0 | 152 mm | Bad | Lannion in November |
| December | 10° / 7° | 10 | 20 | 1 | 160 mm | Bad | Lannion in December |