World Resorts USA Mustang Island Weather

Mustang Island sea water temperature

Current sea water temperature:
+83.8°F
Minimum sea water temperature in July: 87.3°F
Maximum sea water temperature in July: 82.0°F
Average sea water temperature in July: 85.0°F

Sea water temperature for the last 10 days:

July 2 83.8°F June 27 83.5°F
July 1 83.3°F June 26 83.7°F
June 30 82.9°F June 25 84.2°F
June 29 82.9°F June 24 85.1°F
June 28 83.3°F June 23 84.7°F

When is the warmest sea in Mustang Island?

Based on the data about daily sea water temperature for the last three years the warmest sea in Mustang Island was noticed in August, September and July.

Monthly Sea Temperatures in Mustang Island, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 86.3°F. The highest and lowest sea temperatures during the month were 87.4°F and 84.6°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 86.0°F. The highest and lowest sea temperatures during the month were 88.0°F and 84.2°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 84.2°F. The highest and lowest sea temperatures during the month were 86.0°F and 82.0°F.

Best time for vacation in Mustang Island

Sunniest months:
October 17 days
August 16 days
July 14 days
Warmest months:
August 89.6 °F
July 88.3 °F
June 87.1 °F
Warmest sea temp:
August 86.4 °F
September 85.3 °F
July 85.0 °F
Coldest months:
January 62.3 °F
February 63.5 °F
December 66.9 °F
Rainiest months:
July 3 days
September 2 days
May 2 days
Windiest months:
April 14.2 mph
May 13.6 mph
June 13.5 mph

Mustang Island on a weather map

Mustang Island
+82°F
N 16 mph
Feels like: +90°F
Precip.: 11%
Places in USA:
Name
°F
+82°F
+77°F
+77°F
+59°F
+79°F
+84°F
+72°F
+77°F
+84°F
+63°F
+54°F
+77°F
+79°F
+79°F
+66°F
24 Hours Forecast
Mustang Island
Local time: 02:21
July 03, friday
0300
82°F
N
16 mph
0600
82°F
N
11 mph
0900
84°F
N
10 mph
1200
84°F
NW
8 mph
1500
84°F
NW
11 mph
1800
84°F
NW
13 mph
2100
82°F
NW
15 mph
July 04, saturday
0000
82°F
NW
17 mph
Units of measurement: °C / °F