Climate almanac
Saint Simons Island
Georgia, United States · 31.15°, -81.37°
What is the weather like in Saint Simons Island in September?
In September, Saint Simons Island is typically 81°F (27°C) during the day and 77°F (25°C) at night. The month brings about 6.5 in (165 mm) of precipitation in total.
- Average high81°F (27°C)
- Average low77°F (25°C)
- Precipitation6.5 in (165 mm)
- Clear or mostly clear days11
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)