Port Isabel Water Temperature
(Today) 2024
23.1°C / 73.5°F
The water will feel warm (balmy). Most people will be OK with just bathers / swimming costume at this temperature. If you intend to stay in the water for a while a thin shorty wetsuit will suffice.
Current weather
25°C / 76°F
(scattered clouds)
(scattered clouds)
Wind
18 mph
Humidity
90%
The measurements for the water temperature in Port Isabel, Texas are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.
Water temp by month
Monthly average max / min water temperatures
The graph below shows the range of monthly Port Isabel water temperature derived from many years of historical sea surface temperature data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 17.1 | 17 | 16.7 | 19.7 | 23.2 | 27.1 | 28.1 | 28.5 | 28 | 25.1 | 22.3 | 18.3 |
| Max °C | 20.8 | 19.5 | 22.1 | 26 | 27.9 | 29.5 | 29.9 | 30.8 | 30.6 | 29.7 | 25.9 | 23.8 |
| Min °F | 64.2 | 63.6 | 64.2 | 69.9 | 75.6 | 81.7 | 83.3 | 84.2 | 83.4 | 79 | 73.6 | 67.1 |
| Max °F | 67.9 | 66.1 | 69.6 | 76.2 | 80.3 | 84.1 | 85.1 | 86.5 | 86 | 83.6 | 77.2 | 72.6 |
The warmest water temperature is in August with an average around 85.3°F / 29.6°C. The coldest month is February with an average water temperature of 64.8°F / 18.2°C.
