Measurements:
°C
°F
Galveston Island
90°F
N 6 mph
Feels like: 100°F
Precip: 7%
World Resorts USA Galveston Island Weather

14 Day Weather Forecast

09.15
tue
DAY
92°F
NW 7 mph
precip
6%
NIGHT
90°F
NW 14 mph
precip
9%
09.16
wed
DAY
88°F
W 13 mph
precip
19%
NIGHT
90°F
NW 17 mph
precip
20%
09.17
thu
DAY
90°F
W 18 mph
precip
22%
NIGHT
88°F
NW 14 mph
precip
12%
09.18
fri
DAY
88°F
SW 7 mph
precip
4%
NIGHT
88°F
NW 14 mph
precip
4%
09.19
sat
DAY
88°F
NW 6 mph
precip
4%
NIGHT
86°F
NW 12 mph
precip
11%
09.20
sun
DAY
86°F
SW 4 mph
precip
17%
NIGHT
88°F
NW 12 mph
precip
6%
09.21
mon
DAY
86°F
N 2 mph
precip
16%
NIGHT
86°F
NE 11 mph
precip
68%
09.22
tue
DAY
82°F
E 6 mph
precip
48%
NIGHT
82°F
E 6 mph
precip
8%
09.23
wed
DAY
82°F
S 11 mph
precip
6%
NIGHT
88°F
NW 11 mph
precip
12%
09.24
thu
DAY
80°F
S 7 mph
precip
3%
NIGHT
88°F
E 8 mph
precip
5%
09.25
fri
DAY
84°F
S 16 mph
precip
3%
NIGHT
86°F
SW 15 mph
precip
4%
09.26
sat
DAY
76°F
S 21 mph
precip
3%
NIGHT
80°F
SW 25 mph
precip
1%
09.27
sun
DAY
76°F
S 21 mph
precip
4%
NIGHT
82°F
SW 22 mph
precip
3%
09.28
mon
DAY
78°F
S 17 mph
precip
5%
NIGHT
86°F
S 14 mph
precip
3%

Galveston Island Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Galveston Island was 91.4°F. The maximum and minimum values were 90.8°F and 92.0°F respectively.

Galveston Island on the Weather Map

Best Time to Visit Galveston Island
The most sunny months:
October 18 days
August 15 days
September 14 days
The most warm months:
August 93.8 °F
July 92.9 °F
June 91.6 °F
Warmest sea temperature:
August 91.6 °F
July 90.2 °F
September 89.0 °F
The most cold months:
January 59.6 °F
February 61.8 °F
December 64.9 °F
The most rainy months:
November 3 days
July 3 days
May 3 days
The most windy months:
April 12 mph
January 11 mph
May 11 mph
USA Resorts:
NAME
Boston +64
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +74
Maui +66
Miami +92
Myrtle Beach +86
New York +72
Panama City Beach +90
San Diego +72
San Francisco +60
Santa Monica +72
Sarasota +94
Washington +76
24 Hours Weather Forecast
Galveston Island
Local time: 09:37
15 sep, tuesday
1200 92°F
NW
7 mph
1500 90°F
NW
12 mph
1800 90°F
NW
11 mph
2100 90°F
NW
13 mph
16 sep, wednesday
0000 90°F
NW
14 mph
0300 90°F
NW
9 mph
0600 88°F
NW
6 mph
0900 88°F
W
9 mph