Climate almanac
Hennef (Sieg)
North Rhine-Westphalia, Germany · 50.78°, 7.28°
What is the weather like in Hennef (Sieg) in September?
In September, Hennef (Sieg) is typically 69°F (20°C) during the day and 52°F (11°C) at night. The month brings about 2.9 in (73 mm) of precipitation in total.
- Average high69°F (20°C)
- Average low52°F (11°C)
- Precipitation2.9 in (73 mm)
- Clear or mostly clear days7
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)