Climate almanac
San Isidro
Canóvanas, Puerto Rico · 18.39°, -65.89°
What is the climate like in San Isidro?
The best time to visit San Isidro is typically December – April, with trip comfort peaking in January (7.9/10). San Isidro 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 43 in (1088 mm) of precipitation.
- Best time to visitDecember – April — 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 (6.7 in (169 mm))
- Driest monthJanuary (1.7 in (43 mm))
- Annual precipitation43 in (1088 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromSan Juan L M Marin Intl AP, 14 km away (1956-2026)