Climate almanac
Port Isabel
Texas, United States · 26.07°, -97.21°
What is the weather like in Port Isabel in December?
In December, Port Isabel is typically 71°F (21°C) during the day and 65°F (18°C) at night. The month brings about 1.9 in (48 mm) of precipitation in total.
- Average high71°F (21°C)
- Average low65°F (18°C)
- Precipitation1.9 in (48 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)