Climate almanac
Isabela
Isabela, Puerto Rico · 18.50°, -67.02°
What is the weather like in Isabela in September?
In September, Isabela is typically 85°F (30°C) during the day and 79°F (26°C) at night. The month brings about 6.8 in (174 mm) of precipitation in total.
- Average high85°F (30°C)
- Average low79°F (26°C)
- Precipitation6.8 in (174 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)