Climate almanac
San Juan Capistrano
California, United States · 33.50°, -117.66°
What is the weather like in San Juan Capistrano in September?
In September, San Juan Capistrano is typically 75°F (24°C) during the day and 66°F (19°C) at night. The month brings about 0.3 in (7 mm) of precipitation in total.
- Average high75°F (24°C)
- Average low66°F (19°C)
- Precipitation0.3 in (7 mm)
- Clear or mostly clear days21
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)