World sea water temperatures

Water temperature in Port Isabel (TX) in April

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Is it warm enough to swim in Port Isabel in April? Average water temperature in Port Isabel in April is 73°F and therefore suitable for comfortable swimming. The warmest sea in Port Isabel in April is 78.8°F, and the coldest is 65.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Port Isabel

Changes water temperature in Port Isabel in April 2025, 2024

To get an accurate forecast for the water temperature in Port Isabel for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Port Isabel, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of April.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
April 175.9°F69.4°F65.7°F75.9°F
April 275°F69.1°F66.4°F75°F
April 374.7°F70.3°F66.4°F74.8°F
April 474.5°F69.3°F66.7°F75°F
April 575.2°F68.7°F66.7°F75.2°F
April 673.2°F70.7°F66.7°F74.5°F
April 771.2°F70.7°F66.4°F75.4°F
April 870.3°F71.2°F66.6°F77.5°F
April 970.2°F71.2°F66.9°F77.5°F
April 1070.3°F69.8°F67.3°F77.4°F
April 1170°F69.4°F67.6°F77.5°F
April 1271.1°F71.8°F68.2°F77.7°F
April 1370.5°F71.6°F68.5°F77.5°F
April 1471.6°F72.9°F69.1°F77.2°F
April 1572.3°F74.7°F67.8°F76.6°F
Day 2025 2024 Min Max
April 1673.8°F74.5°F67.5°F76.6°F
April 1775.2°F73.9°F67.5°F76.1°F
April 1876.1°F73.9°F67.6°F76.6°F
April 1976.3°F75.7°F68°F76.5°F
April 2077°F75.4°F68.5°F77°F
April 2175.4°F75.2°F69.1°F76.3°F
April 2275°F74.5°F71.2°F77°F
April 2375.6°F74.3°F71.6°F78.1°F
April 2475.7°F73.8°F71.4°F78.4°F
April 2576.1°F74.8°F71.8°F78.6°F
April 2676.5°F75.6°F71.4°F77.7°F
April 2777°F75.7°F70.9°F78.3°F
April 2877.9°F76.3°F70.9°F78.1°F
April 2978.8°F75.4°F70.7°F78.8°F
April 3078.6°F75.9°F71.8°F78.6°F
Port Isabel water temp chart in April

Average water temperature in Port Isabel in April over a decade

20162017201820192020
73.9°F75.6°F73°F71.1°F76.5°F
20212022202320242025
73.2°F73.9°F73°F72.9°F74.3°F

Port Isabel sea state in April

Chart comparing the height of waves in Port Isabel in April over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Port Isabel in April

Port Isabel water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in April?

Want to know where the water temperature in April is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in April. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
South Padre Island72.7°F65.7°F77.9°F
Boca Chica Beach72.9°F66°F77.9°F
Brownsville72.7°F65.8°F77.9°F
Playa Bagdad73°F66°F78.1°F
Matamoros73°F66°F78.1°F
Arroyo City73.9°F67.1°F82.9°F
Port Mansfield73.6°F67.8°F81.3°F
Laguna Madre73.2°F67.6°F80.2°F
Padre Island72°F66.6°F78.3°F
North Padre Island71.8°F66.4°F78.3°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Port Isabel is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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