Measurements:
°C
°F
CURRENT WEATHER
16:31
Galveston Island
98°F
NW 9 mph
Feels like: 120°F
Precip: 4%
World Resorts USA Galveston Island Weather

7 Day Weather Forecast

08.25
tue
DAY
96°F
NW 6 mph
precip
7%
NIGHT
90°F
N 16 mph
precip
7%
08.26
wed
DAY
88°F
N 6 mph
precip
6%
NIGHT
88°F
N 17 mph
precip
7%
08.27
thu
DAY
88°F
NE 11 mph
precip
7%
NIGHT
88°F
N 15 mph
precip
19%
08.28
fri
DAY
88°F
NW 2 mph
precip
17%
NIGHT
88°F
N 13 mph
precip
6%
08.29
sat
DAY
88°F
N 2 mph
precip
6%
NIGHT
90°F
N 12 mph
precip
5%
08.30
sun
DAY
88°F
N 6 mph
precip
8%
NIGHT
88°F
N 16 mph
precip
7%
08.31
mon
DAY
88°F
N 9 mph
precip
14%
NIGHT
88°F
N 17 mph
precip
8%

Galveston Island Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Galveston Island was 30.7°F. The maximum and minimum values were 29.9°F and 31.1°F respectively.

Galveston Island on the Weather Map

Best Time to Visit Galveston Island
The most sunny months:
October 18 days
September 14 days
November 14 days
The most warm months:
August 93.5 °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
more details