Climate almanac
Riehen
Basel-City, Switzerland · 47.58°, 7.65°
What is the weather like in Riehen in September?
In September, Riehen is typically 70°F (21°C) during the day and 52°F (11°C) at night. The month brings about 3.5 in (89 mm) of precipitation in total.
- Average high70°F (21°C)
- Average low52°F (11°C)
- Precipitation3.5 in (89 mm)
- Clear or mostly clear days9
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)