World Resorts USA Mustang Island Weather

Mustang Island weather in April

Weather in Mustang Island: April

Average day temperature: 76.5°F
Average night temperature: 70.4°F
Sea water temperature: 73.3°F
Number of sunny days: 7 days
Day length: 12.5 - 13.2 hours
Number of rainy days: 1 day
Precipitation totals: 0.7 in.

Air temperature in April, °F

Show year:
2026
2025
2024

The highest day temperature during April of 2026 was 82°F. At the same time the lowest night temperature was 59°F. Daily and nightly averages during April were 75.4°F and 72.0°F.

Sea water temperature in Mustang Island in April, °F

Show year:
2026
2025
2024

The average sea water temperature in April of 2026 was 74.8°F. The highest and lowest sea temperatures during the month were 77.4°F and 72.7°F.

Sunny, partly cloudy and cloudy days

Mostly all days in April are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in April, in.

Precipitation total value in Mustang Island in April is 0.7 in. Other months of the year show relatively similar values.

Wind speed in April, mph

The average wind speed value in April is 14.2 mph It makes April most windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in April is: 6.0.

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 87.4 °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 13.2 mph

Mustang Island on a weather map

Mustang Island
+77°F
NW 16 mph
Feels like: +81°F
Precip.: 0%
Places in USA:
Name
°F
+55°F
+73°F
+73°F
+57°F
+52°F
+79°F
+79°F
+66°F
+54°F
+54°F
+50°F
+77°F
+75°F
+77°F
+54°F
24 Hours Forecast
Mustang Island
Local time: 07:35
April 29, wednesday
0900
77°F
N
16 mph
1200
81°F
NW
15 mph
1500
81°F
NW
14 mph
1800
79°F
NW
15 mph
2100
77°F
NW
12 mph
April 30, thursday
0000
77°F
NW
13 mph
0300
77°F
NW
11 mph
0600
77°F
NW
10 mph
Units of measurement: °C / °F