Climate almanac
Lannion
Brittany, France · 48.73°, -3.46°
What is the weather like in Lannion in September?
In September, Lannion is typically 64°F (18°C) during the day and 58°F (15°C) at night. The month brings about 2.8 in (70 mm) of precipitation in total.
- Average high64°F (18°C)
- Average low58°F (15°C)
- Precipitation2.8 in (70 mm)
- Clear or mostly clear days6
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)