Current sea water temperature:
+86.7°F
| Minimum sea water temperature in September: | 88.7°F |
| Maximum sea water temperature in September: | 79.5°F |
| Average sea water temperature in September: | 85.3°F |
| more information | |
14 days
forecast
forecast
| Galveston Island |
monthly
weather
weather
| Galveston Island |
Sea water temperature for the last 10 days:
| September 22 | 86.7°F | September 17 | 87.6°F |
| September 21 | 86.5°F | September 16 | 87.3°F |
| September 20 | 86.4°F | September 15 | 87.4°F |
| September 19 | 86.4°F | September 14 | 87.3°F |
| September 18 | 86.2°F | September 13 | 87.3°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 87.2°F. The highest and lowest sea temperatures during the month were 88.0°F and 85.8°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:
2026
2025
2024
The average sea water temperature in September of 2026 was 87.1°F. The highest and lowest sea temperatures during the month were 87.8°F and 86.2°F.
current
weather
weather
| Galveston Island |
weather in
September
September
| 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: 00:26
September 23, wednesday
0300
86°F
NW
6 mph
6 mph
0600
84°F
SW
2 mph
2 mph
0900
84°F
SW
9 mph
9 mph
1200
84°F
SW
12 mph
12 mph
1500
86°F
W
9 mph
9 mph
1800
86°F
NW
7 mph
7 mph
2100
86°F
N
8 mph
8 mph
September 24, thursday
0000
86°F
NE
2 mph
2 mph
