Lannion, in Brittany, France, is home to roughly 21,500 people in the Central European time zone at 48.7°N latitude.
In 2025, Lannion averaged an annual temperature of 55°F, with hottest temperatures reaching 92°F in June and lowest around 29°F in January. The city received approximately 42 inches of precipitation during the year.
View historical weather for Lannion · More cities in Brittany