Current sea water temperature:
+67.3°F
| Minimum sea water temperature in December: | 69.4°F |
| Maximum sea water temperature in December: | 53.6°F |
| Average sea water temperature in December: | 63.3°F |
| more information | |
14 days
forecast
forecast
| Galveston Island |
monthly
weather
weather
| Galveston Island |
Sea water temperature for the last 10 days:
| December 4 | 67.3°F | November 29 | 70.7°F |
| December 3 | 68.0°F | November 28 | 72.1°F |
| December 2 | 68.9°F | November 27 | 73.0°F |
| December 1 | 69.4°F | November 26 | 74.5°F |
| November 30 | 70.0°F | November 25 | 74.3°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:
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
December
December
| 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: 22:04
December 05, friday
0000
48°F
S
17 mph
17 mph
0300
46°F
S
15 mph
15 mph
0600
45°F
S
16 mph
16 mph
0900
48°F
S
14 mph
14 mph
1200
48°F
SW
7 mph
7 mph
1500
50°F
S
2 mph
2 mph
1800
52°F
SW
6 mph
6 mph
2100
54°F
W
6 mph
6 mph
