Current sea water temperature:
+67.3°F
| Minimum sea water temperature in December: | 73.4°F |
| Maximum sea water temperature in December: | 56.5°F |
| Average sea water temperature in December: | 66.2°F |
| more information | |
14 days
forecast
forecast
| Mustang Island |
monthly
weather
weather
| Mustang Island |
Sea water temperature for the last 10 days:
| December 23 | 67.3°F | December 18 | 64.2°F |
| December 22 | 65.1°F | December 17 | 63.7°F |
| December 21 | 64.9°F | December 16 | 66.0°F |
| December 20 | 64.6°F | December 15 | 66.2°F |
| December 19 | 64.8°F | December 14 | 65.7°F |
Monthly sea water temperature, °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.
current
weather
weather
| Mustang Island |
weather in
December
December
| Mustang Island |
Best time for vacation in Mustang Island
Mustang Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Mustang Island
Local time: 22:15
December 24, wednesday
0000
70°F
NW
8 mph
8 mph
0300
70°F
NW
7 mph
7 mph
0600
68°F
NW
8 mph
8 mph
0900
70°F
NW
7 mph
7 mph
1200
72°F
NW
10 mph
10 mph
1500
72°F
NW
11 mph
11 mph
1800
70°F
NW
11 mph
11 mph
2100
70°F
NW
9 mph
9 mph
