Climate almanac
San Sebastián
Retalhuleu, Guatemala · 14.56°, -91.65°
What is the weather like in San Sebastián in September?
In September, San Sebastián is typically 88°F (31°C) during the day and 74°F (23°C) at night. The month brings about 16 in (408 mm) of precipitation in total.
- Average high88°F (31°C)
- Average low74°F (23°C)
- Precipitation16 in (408 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)