Climate almanac
Mosfellsbær
Capital Region, Iceland · 64.17°, -21.70°
What is the weather like in Mosfellsbær in September?
In September, Mosfellsbær is typically 51°F (10°C) during the day and 42°F (5°C) at night. The month brings about 5.2 in (132 mm) of precipitation in total. Snowfall averages about 0.4 in (10 mm) over the month.
- Average high51°F (10°C)
- Average low42°F (5°C)
- Precipitation5.2 in (132 mm)
- Clear or mostly clear days2
- Snowfall0.4 in (10 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)