Climate almanac
Costa Rica
Sinaloa, Mexico · 24.59°, -107.39°
What is the weather like in Costa Rica in September?
In September, Costa Rica is typically 92°F (33°C) during the day and 79°F (26°C) at night. The month brings about 5.6 in (142 mm) of precipitation in total.
- Average high92°F (33°C)
- Average low79°F (26°C)
- Precipitation5.6 in (142 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)