Climate almanac
San Antonio
Dorado, Puerto Rico · 18.45°, -66.30°
What is the climate like in San Antonio?
The best time to visit San Antonio is typically December – June, with trip comfort peaking in January (7.9/10). San Antonio is warmest in August, when daily highs average 87°F (30°C), and coolest in February, when lows fall to about 73°F (23°C). The wettest month is typically September and the driest is January; the year sees roughly 40 in (1018 mm) of precipitation.
- Best time to visitDecember – June — comfort peaks in January (7.9/10)
- Warmest monthAugust — average high 87°F (30°C)
- Coolest monthFebruary — average low 73°F (23°C)
- Wettest monthSeptember (6.4 in (163 mm))
- Driest monthJanuary (1.7 in (42 mm))
- Annual precipitation40 in (1018 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromManati 2 E, 17 km away (1900-2026)