Port Isabel

What is the climate like in Port Isabel?

The best time to visit Port Isabel is typically October – June, with trip comfort peaking in February (7.7/10). Port Isabel is warmest in August, when daily highs average 85°F (30°C), and coolest in January, when lows fall to about 61°F (16°C). The wettest month is typically September and the driest is February; the year sees roughly 32 in (820 mm) of precipitation.

• Best time to visitOctober – June — comfort peaks in February (7.7/10)
• Warmest monthAugust — average high 85°F (30°C)
• Coolest monthJanuary — average low 61°F (16°C)
• Wettest monthSeptember (5.6 in (143 mm))
• Driest monthFebruary (1.2 in (32 mm))
• Annual precipitation32 in (820 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromPort Isabel, 10 km away (1928-2026)