Lannion Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Lannion.
Climate overview of Lannion
Lannion, Brittany, France, experiences moderate temperature changes through the seasons. August is the warmest month with daytime highs of 20°C (68°F), while January is the coolest at 11°C (52°F).
With around 993 mm (39 in) of annual rainfall, the city has moderate precipitation levels. December is the wettest month and July the driest.
Lannion Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Lannion - and find the best time to visit.
Monthly Temperature in Lannion
The weather in Lannion changes moderately throughout the year, offering enough variation to appreciate each season. Typically, average maximum daytime temperatures range from a pleasant 20°C (68°F) in August to a chilly 11°C (52°F) in the coolest month, January.
Nights vary from 15°C (59°F) in August to around 6°C (43°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Lannion
Generally, Lannion has a moderate amount of precipitation, averaging 993 mm (39 in) of rainfall annually. The climate in Lannion shows significant variation throughout the year. Expect high rainfall in December, the wettest month, with an average of 128 mm (5 in) of precipitation over 20 rainy days.
In contrast, the driest month July offers drier and sunnier days, with around 49 mm (1.9 in) of rainfall over 11 rainy days. For more details, please visit our Lannion Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Lannion
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July, August and September
- Fewest rainy days: June, July, August and September
Frequently asked questions about the climate in Lannion
What is the best time to visit Lannion?
July and August typically offer the most optimal weather in Lannion. In contrast, January, February and December tend to have less optimal conditions.
What temperatures can I expect in Lannion?
Daytime highs range from 11°C (52°F) in January to 20°C (68°F) in August. Nighttime lows range from 6°C (43°F) to 15°C (59°F).
How much rain does Lannion get?
Annual rainfall is around 993 mm (39 in). December is the wettest month with 128 mm (5 in), while July is the driest with 49 mm (1.9 in).
Lannion 3-Day Forecast
Lannion on the map
Lannion is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Marseille
32°C (90°F) Toulouse
29°C (84°F) Bordeaux29°C (84°F) Lyon28°C (82°F) Cannes27°C (81°F) Nice27°C (81°F) Paris26°C (79°F) Chamonix-Mont-Blanc
18°C (64°F) 
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