Climate almanac
San José
Alajuela Province, Costa Rica · 10.95°, -85.14°
What is the weather like in San José in December?
In December, San José is typically 79°F (26°C) during the day and 73°F (23°C) at night. The month brings about 9.5 in (240 mm) of precipitation in total.
- Average high79°F (26°C)
- Average low73°F (23°C)
- Precipitation9.5 in (240 mm)
- Clear or mostly clear days4
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)