World Resorts USA Mustang Island Weather

Mustang Island 14 Days Forecast

02.09
wed
Day
88°F
N 11 mph
Precip.
10%
Night
84°F
N 18 mph
Precip.
26%
03.09
thu
Day
82°F
N 10 mph
Precip.
10%
Night
84°F
NW 15 mph
Precip.
22%
04.09
fri
Day
82°F
NW 9 mph
Precip.
25%
Night
84°F
NW 12 mph
Precip.
22%
05.09
sat
Day
84°F
N 8 mph
Precip.
10%
Night
84°F
NW 14 mph
Precip.
10%
06.09
sun
Day
84°F
NW 7 mph
Precip.
9%
Night
82°F
N 11 mph
Precip.
15%
07.09
mon
Day
84°F
NW 6 mph
Precip.
10%
Night
84°F
NW 11 mph
Precip.
11%
08.09
tue
Day
84°F
NW 7 mph
Precip.
10%
Night
84°F
NW 13 mph
Precip.
15%
09.09
wed
Day
84°F
N 9 mph
Precip.
12%
Night
84°F
NW 16 mph
Precip.
12%
10.09
thu
Day
84°F
N 16 mph
Precip.
11%
Night
84°F
N 22 mph
Precip.
18%
11.09
fri
Day
84°F
N 19 mph
Precip.
12%
Night
84°F
NW 18 mph
Precip.
19%
12.09
sat
Day
84°F
NW 14 mph
Precip.
26%
Night
84°F
NW 15 mph
Precip.
24%
13.09
sun
Day
84°F
NW 10 mph
Precip.
21%
Night
84°F
NW 14 mph
Precip.
17%
14.09
mon
Day
84°F
NW 9 mph
Precip.
49%
Night
84°F
NW 15 mph
Precip.
11%
15.09
tue
Day
84°F
W 8 mph
Precip.
13%
Night
84°F
NW 14 mph
Precip.
10%

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.

Air temperature in Mustang Island, °F

Precipitation total in Mustang Island, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Mustang Island

Sunniest months:
October 17 days
August 17 days
July 16 days
Warmest months:
August 89.4 °F
July 88.4 °F
June 87.1 °F
Warmest sea temp:
August 86.2 °F
September 85.3 °F
July 84.9 °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

Current weather
09:47
Mustang Island
+84°F
N 13 mph
Feels like: +93°F
Precip.: 10%
Places in USA:
Name
°F
Boston
+70°F
Washington
+91°F
Hawaii
+77°F
Las Vegas
+82°F
Los Angeles
+70°F
Miami
+88°F
Maui
+63°F
Myrtle Beach
+91°F
New York
+73°F
San Diego
+73°F
San Francisco
+63°F
Santa Monica
+70°F
Sarasota
+86°F
Houston
+81°F
Chicago
+75°F
all places
24 Hours Forecast
Mustang Island
Local time: 09:47
September 02, wednesday
1200
88°F
N
11 mph
1500
84°F
NW
12 mph
1800
84°F
NW
15 mph
2100
84°F
NW
21 mph
September 03, thursday
0000
84°F
N
18 mph
0300
82°F
N
16 mph
0600
82°F
N
15 mph
0900
82°F
N
12 mph
Units of measurement: °C / °F