Current sea water temperature:
+78.4°F
| Minimum sea water temperature in April: | 79.0°F |
| Maximum sea water temperature in April: | 65.7°F |
| Average sea water temperature in April: | 72.9°F |
| more information | |
14 days
forecast
forecast
| Galveston Island |
monthly
weather
weather
| Galveston Island |
Sea water temperature for the last 10 days:
| April 29 | 78.4°F | April 24 | 73.9°F |
| April 28 | 77.9°F | April 23 | 73.2°F |
| April 27 | 77.0°F | April 22 | 73.8°F |
| April 26 | 76.1°F | April 21 | 75.0°F |
| April 25 | 75.2°F | April 20 | 75.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Galveston Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in Galveston Island was noticed in August, July and September.
Monthly Sea Temperatures in Galveston Island, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 87.8°F. The highest and lowest sea temperatures during the month were 89.1°F and 86.4°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.4°F. The highest and lowest sea temperatures during the month were 88.0°F and 85.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.5°F. The highest and lowest sea temperatures during the month were 87.4°F and 83.7°F.
current
weather
weather
| Galveston Island |
weather in
May
May
| Galveston Island |
Best time for vacation in Galveston Island
Galveston Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Galveston Island
Local time: 07:36
April 29, wednesday
0900
77°F
N
12 mph
12 mph
1200
79°F
N
12 mph
12 mph
1500
79°F
N
13 mph
13 mph
1800
77°F
N
11 mph
11 mph
2100
77°F
N
11 mph
11 mph
April 30, thursday
0000
75°F
N
7 mph
7 mph
0300
75°F
W
17 mph
17 mph
0600
75°F
NW
16 mph
16 mph
