Climate almanac
San Clemente
California, United States · 33.43°, -117.61°
What is the weather like in San Clemente in September?
In September, San Clemente is typically 81°F (27°C) during the day and 66°F (19°C) at night. The month brings about 0.3 in (8 mm) of precipitation in total.
- Average high81°F (27°C)
- Average low66°F (19°C)
- Precipitation0.3 in (8 mm)
- Clear or mostly clear days21
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)