Port Isabel is a city of approximately 5,000 people in Texas, United States. Located in the Central Time Zone at 26.1°N latitude.
In 2025, Port Isabel recorded an average annual temperature of 76°F — about 1.0°F above the 30-year normal of 75°F. The hottest day reached 96°F in August; the coldest was 32°F in January. Total precipitation was 34 inches (wetter than usual). The wettest month was September.
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