Climate almanac
San Juan
San José, Costa Rica · 9.96°, -84.08°
What is the weather like in San Juan in May?
In May, San Juan is typically 74°F (23°C) during the day and 62°F (17°C) at night. The month brings about 13 in (342 mm) of precipitation in total.
- Average high74°F (23°C)
- Average low62°F (17°C)
- Precipitation13 in (342 mm)
- Clear or mostly clear days1
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)