Port Aransas water temp

This data the coastal Port Aransas ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current ocean temperature in Port Aransas

Water temperature in Port Aransas today is 85.6°F. Based on our historical data over a period of ten years, the warmest water in this day in the Gulf of Mexico near Port Aransas was recorded in 2016 and was 87.4°F, and the coldest was recorded in 2008 at 80.8°F. Sea water temperature in Port Aransas is expected to drop to 82.4°F in the next 10 days. September average water temperature in Port Aransas is 84.6°F, the minimum temperature is 79.2°F, and the maximum is 87.8°F.

The swimming season in Port Aransas lasts from March to November. During those months, Port Aransas water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Port Aransas in winter reaches 63.9°F, in spring 72°F, in summer the average temperature rises to 84.2°F, and in autumn it is 79°F.

Port Aransas water temperature now

The ocean salinity in Port Aransas is 30.44‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Port Aransas for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Port Aransas. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Port Aransas. Data in table shown for September 22, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Port Aransas

Port Aransas weather forecast

Current temperature and weather

Data in a table show Port Aransas temperature today (September 22, 2025). For more information and forecast for a few days, go to the weather forecast Port Aransas.

0-3 h	3-6 h	6-9 h	9-12 h
82.6°F	81.9°F	81°F	83.8°F

12-15 h	15-18 h	18-21 h	21-24 h
91.6°F	90.7°F	86.4°F	84°F

Port Aransas water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Port Aransas. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Port Aransas on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Port Aransas

The nearest beaches and cities from Port Aransas with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Rockport	85.1°F	87.8°F		1' 1"
Mustang Island	85.1°F	86°F		2' 4"
Whitecap Beach	85.1°F	89.6°F		2' 2"
Padre Balli Park	85.1°F	89.6°F		2' 2"
North Padre Island	85.3°F	89.6°F		2' 2"
Malaquite Beach	85.3°F	89.6°F		1' 11"
Padre Island	85.3°F	89.6°F		1' 11"
Seadrift	85.1°F	87.8°F		1' 3"
Port Lavaca	84.4°F	93.2°F		0' 10"
Port O'Connor	85.1°F	93.2°F		1' 9"

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Our report for Port Aransas 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.