Measurements:
°C
°F
Galveston
80°F
NW 13 mph
Feels like: 84°F
Precip: 77%
World Resorts USA Galveston Weather

Galveston Sea Water Temperature

Current Sea Water Temperature:
+75.4°F
Maximum Sea Water Temperature in April: 81.8°F
Minimum Sea Water Temperature in April: 67.0°F
Average water temperature in April: 74.9°F

Sea Water Temperature for the Last 10 Days:

April 23 75.4°F April 18 79.0°F
April 22 76.4°F April 17 78.2°F
April 21 77.6°F April 16 78.4°F
April 20 78.2°F April 15 77.6°F
April 19 79.2°F April 14 77.8°F

When is the Warmest Sea for Galveston?

According to our data for the last three years for Galveston the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Galveston was 92.1°F. The maximum and minimum values were 90.6°F and 93.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Galveston was 90.5°F. The maximum and minimum values were 89.0°F and 92.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Galveston was 89.4°F. The maximum and minimum values were 87.6°F and 91.4°F respectively.

Best Time to Visit Galveston
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 91.6 °F
July 89.9 °F
September 88.8 °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 11 mph
January 11 mph
May 11 mph

Galveston on the Weather Map

USA Resorts:
NAME
Chicago +70
Hawaii +76
Honolulu +76
Houston +82
Las Vegas +68
Los Angeles +64
Maui +70
Miami +82
Miami Beach +82
New York +76
San Diego +66
San Francisco +58
Sarasota +88
Tampa +86
Washington +82
24 Hours Weather Forecast
Galveston
Local time: 11:11
23 apr, thursday
1200 80°F
NW
13 mph
1500 78°F
NW
16 mph
1800 78°F
NW
15 mph
2100 74°F
NW
17 mph
24 apr, friday
0000 76°F
NW
17 mph
0300 76°F
N
14 mph
0600 76°F
N
16 mph
0900 76°F
N
15 mph