Climate almanac
Saint Helier
St Helier, Jersey · 49.19°, -2.10°
What is the weather like in Saint Helier in September?
In September, Saint Helier is typically 65°F (18°C) during the day and 61°F (16°C) at night. The month brings about 3.9 in (99 mm) of precipitation in total.
- Average high65°F (18°C)
- Average low61°F (16°C)
- Precipitation3.9 in (99 mm)
- Clear or mostly clear days6
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)