Climate almanac
Mercedes
San José, Costa Rica · 9.27°, -83.58°
What is the weather like in Mercedes in December?
In December, Mercedes is typically 75°F (24°C) during the day and 60°F (16°C) at night. The month brings about 8.3 in (211 mm) of precipitation in total.
- Average high75°F (24°C)
- Average low60°F (16°C)
- Precipitation8.3 in (211 mm)
- Clear or mostly clear days9
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)