Measurements:
°C
°F
Mustang Island
48°F
S 14 mph
Feels like: 44°F
Precip: 0%
World Resorts USA Mustang Island Weather May Weather in Mustang Island

Mustang Island Weather: May

Average Day Temperature: 86.5°F
Average Night Temperature: 79.1°F
Sea Water Temperature: 82.7°F
Number of Sunny Days: 7 days
Sunshine Hours: 13.2 - 13.8 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.5 in

Air Temperature in May, °F

Select Year: 2025 2024 2023

The highest day temperature in May 2025 was 97°F. The lowest night temperature was 66°F. The average values for day and night temperatures during May were 88.7°F и 78.6°F respectivly.

Mustang Island Water Sea Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Mustang Island was 83.5°F. The maximum and minimum values were 80.8°F and 87.4°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Mustang Island is 1.5 in. It makes may the most rainy month of the year.

Wind Speed in May, mph

The average wind speed in May is 13.6 mph. It makes May one of the most windy months of the year for Mustang Island.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Mustang Island in May is 6.9 hours.

Best Time to Visit Mustang Island
The most sunny months:
October 17 days
August 16 days
July 14 days
The most warm months:
August 94.0 °F
July 92.6 °F
June 91.5 °F
Warmest sea temperature:
August 90.5 °F
September 89.3 °F
July 88.9 °F
The most cold months:
January 63.5 °F
February 63.9 °F
December 68.7 °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
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Mustang Island
Local time: 02:07
05 dec, friday
0300 48°F
S
14 mph
0600 48°F
S
13 mph
0900 48°F
S
11 mph
1200 54°F
S
7 mph
1500 60°F
SW
5 mph
1800 60°F
SW
6 mph
2100 56°F
SW
7 mph
06 dec, saturday
0000 58°F
SW
6 mph