Climate almanac
San Juan
Alajuela Province, Costa Rica · 10.10°, -84.32°
What is the weather like in San Juan in August?
In August, San Juan is typically 77°F (25°C) during the day and 64°F (18°C) at night. The month brings about 14 in (344 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low64°F (18°C)
- Precipitation14 in (344 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)