Climate almanac
Châteaulin
Brittany, France · 48.20°, -4.09°
What is the weather like in Châteaulin in September?
In September, Châteaulin is typically 67°F (19°C) during the day and 53°F (12°C) at night. The month brings about 2.7 in (70 mm) of precipitation in total.
- Average high67°F (19°C)
- Average low53°F (12°C)
- Precipitation2.7 in (70 mm)
- Clear or mostly clear days6
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)