The temperatures in Lannion in August are usually low and can range between 14°C and 19°C.
You can expect about 3 to 8 days of rain in Lannion during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Lannion in August 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.
Temperatures
19° / 14°
Rainy Days
6
Snowy Days
0
Dry Days
25
Rainfall
93
mm
Sun Hours
9.6
Hrs
