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

Galveston Sea Water Temperature

Current Sea Water Temperature:
+91.4°F
Maximum Sea Water Temperature in September: 92.6°F
Minimum Sea Water Temperature in September: 82.6°F
Average water temperature in September: 89.0°F

Sea Water Temperature for the Last 10 Days:

September 15 91.4°F September 10 91.4°F
September 14 91.2°F September 09 92.4°F
September 13 91.0°F September 08 91.4°F
September 12 91.0°F September 07 92.0°F
September 11 91.6°F September 06 91.4°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Galveston was 91.4°F. The maximum and minimum values were 90.0°F and 92.6°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Galveston was 90.5°F. The maximum and minimum values were 89.0°F and 92.0°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Galveston was 91.5°F. The maximum and minimum values were 91.0°F and 92.4°F respectively.

Best Time to Visit Galveston
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 91.5 °F
July 90.0 °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 12 mph
January 11 mph
May 11 mph

Galveston on the Weather Map

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
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