Measurements:
°C
°F
CURRENT WEATHER
11:15
Galveston Island
88°F
N 6 mph
Feels like: 96°F
Precip: 0%
World Resorts USA Galveston Island Weather

7 Day Weather Forecast

05.14
thu
DAY
88°F
N 6 mph
precip
0%
NIGHT
80°F
N 16 mph
precip
0%
05.15
fri
DAY
80°F
N 16 mph
precip
0%
NIGHT
80°F
N 21 mph
precip
0%
05.16
sat
DAY
82°F
NW 17 mph
precip
88%
NIGHT
80°F
NW 22 mph
precip
0%
05.17
sun
DAY
82°F
NW 19 mph
precip
0%
NIGHT
82°F
NW 22 mph
precip
0%
05.18
mon
DAY
82°F
NW 22 mph
precip
100%
NIGHT
82°F
NW 21 mph
precip
0%
05.19
tue
DAY
82°F
NW 14 mph
precip
24%
NIGHT
80°F
W 16 mph
precip
100%
05.20
wed
DAY
78°F
E 5 mph
precip
100%
NIGHT
80°F
W 11 mph
precip
100%

Galveston Island Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Galveston Island was 26.6°F. The maximum and minimum values were 24.8°F and 28.6°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 92.6 °F
June 92.0 °F
Warmest sea temperature:
August 91.7 °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:
May 3 days
July 3 days
November 3 days
The most windy months:
April 12 mph
January 11 mph
May 11 mph
more details