Current sea water temperature:
+86.2°F
| Minimum sea water temperature in July: | 89.1°F |
| Maximum sea water temperature in July: | 84.0°F |
| Average sea water temperature in July: | 86.2°F |
| more information | |
14 days
forecast
forecast
| Galveston Island |
monthly
weather
weather
| Galveston Island |
Sea water temperature for the last 10 days:
| July 23 | 86.2°F | July 18 | 85.5°F |
| July 22 | 86.7°F | July 17 | 85.3°F |
| July 21 | 86.2°F | July 16 | 85.6°F |
| July 20 | 85.8°F | July 15 | 86.0°F |
| July 19 | 86.2°F | July 14 | 86.2°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 86.5°F. The highest and lowest sea temperatures during the month were 87.8°F and 84.9°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
July
July
| 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: 18:19
July 23, thursday
2100
79°F
NW
23 mph
23 mph
July 24, friday
0000
79°F
N
21 mph
21 mph
0300
81°F
N
19 mph
19 mph
0600
81°F
N
19 mph
19 mph
0900
84°F
N
15 mph
15 mph
1200
86°F
NW
14 mph
14 mph
1500
86°F
NW
12 mph
12 mph
1800
86°F
NW
11 mph
11 mph
