Measurements:
°C
°F
Mustang Island
80°F
NW 17 mph
Feels like: 84°F
Precip: 68%
World Resorts USA Mustang Island Weather

Mustang Island Sea Water Temperature

Current Sea Water Temperature:
+79.8°F
Maximum Sea Water Temperature in October: 90.8°F
Minimum Sea Water Temperature in October: 76.4°F
Average water temperature in October: 84.2°F

Sea Water Temperature for the Last 10 Days:

October 26 79.8°F October 21 81.2°F
October 25 80.4°F October 20 82.8°F
October 24 79.8°F October 19 84.2°F
October 23 79.8°F October 18 85.0°F
October 22 79.8°F October 17 86.2°F

When is the Warmest Sea for Mustang Island?

According to our data for the last three years for Mustang Island the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Mustang Island was 88.8°F. The maximum and minimum values were 87.0°F and 90.4°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Mustang Island was 90.5°F. The maximum and minimum values were 89.6°F and 91.4°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Mustang Island was 88.3°F. The maximum and minimum values were 85.8°F and 90.2°F respectively.

Best Time to Visit Mustang Island
The most sunny months:
August 17 days
July 16 days
October 15 days
The most warm months:
August 93.7 °F
July 92.6 °F
June 91.3 °F
Warmest sea temperature:
August 90.2 °F
September 89.4 °F
July 88.8 °F
The most cold months:
January 63.7 °F
February 65.0 °F
December 68.8 °F
The most rainy months:
July 3 days
September 2 days
May 2 days
The most windy months:
April 14 mph
May 13 mph
June 13 mph

Mustang Island on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +58
Hawaii +80
Houston +74
Las Vegas +64
Los Angeles +74
Maui +72
Miami +82
New York +62
Panama City Beach +64
San Diego +74
San Francisco +60
Santa Monica +72
Tampa +72
Washington +58
24 Hours Weather Forecast
Mustang Island
Local time: 23:49
27 oct, tuesday
0000 80°F
NW
17 mph
0300 78°F
NW
16 mph
0600 78°F
NW
14 mph
0900 80°F
NW
14 mph
1200 80°F
NW
14 mph
1500 82°F
NW
13 mph
1800 82°F
NW
12 mph
2100 80°F
NW
16 mph