Climate almanac
San Sebastián
San Vicente Department, El Salvador · 13.73°, -88.83°
What is the weather like in San Sebastián in September?
In September, San Sebastián is typically 89°F (32°C) during the day and 72°F (22°C) at night. The month brings about 11 in (286 mm) of precipitation in total.
- Average high89°F (32°C)
- Average low72°F (22°C)
- Precipitation11 in (286 mm)
- Clear or mostly clear days1
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)