Current sea water temperature:
+87.6°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: | 85.1°F |
| more information | |
14 days
forecast
forecast
| Galveston Island |
monthly
weather
weather
| Galveston Island |
Sea water temperature for the last 10 days:
| September 2 | 87.6°F | August 28 | 87.1°F |
| September 1 | 87.6°F | August 27 | 87.8°F |
| August 31 | 87.8°F | August 26 | 87.3°F |
| August 30 | 86.9°F | August 25 | 87.3°F |
| August 29 | 86.7°F | August 24 | 87.1°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:
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
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: 08:47
September 02, wednesday
0900
84°F
NE
17 mph
17 mph
1200
88°F
N
12 mph
12 mph
1500
90°F
N
11 mph
11 mph
1800
86°F
NW
10 mph
10 mph
2100
86°F
NW
14 mph
14 mph
September 03, thursday
0000
84°F
N
16 mph
16 mph
0300
84°F
N
16 mph
16 mph
0600
84°F
N
14 mph
14 mph
