18.05
mon
mon
Day
81°F
NW 22 mph
Precip.
0%
0%
Night
79°F
NW 21 mph
Precip.
85%
85%
19.05
tue
tue
Day
79°F
NW 15 mph
Precip.
83%
83%
Night
79°F
NW 16 mph
Precip.
100%
100%
20.05
wed
wed
Day
79°F
NW 14 mph
Precip.
100%
100%
Night
79°F
NW 14 mph
Precip.
70%
70%
21.05
thu
thu
Day
79°F
NW 14 mph
Precip.
100%
100%
Night
79°F
NW 16 mph
Precip.
0%
0%
22.05
fri
fri
Day
79°F
N 17 mph
Precip.
100%
100%
Night
79°F
NW 16 mph
Precip.
0%
0%
23.05
sat
sat
Day
81°F
NW 14 mph
Precip.
23%
23%
Night
79°F
NW 16 mph
Precip.
42%
42%
24.05
sun
sun
Day
81°F
NW 17 mph
Precip.
100%
100%
Night
79°F
NW 19 mph
Precip.
0%
0%
sea water
temperature
temperature
| Galveston |
monthly
weather
weather
| Galveston |
current
weather
weather
| Galveston |
14 days
forecast
forecast
| Galveston |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 77.0°F. The highest and lowest sea temperatures during the month were 78.6°F and 75.4°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 84.6°F. The highest and lowest sea temperatures during the month were 87.4°F and 82.0°F.
Air temperature in Galveston, °F
Precipitation total in Galveston, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Galveston
Galveston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Galveston
Local time: 03:01
May 18, monday
0600
77°F
NW
22 mph
22 mph
0900
79°F
NW
23 mph
23 mph
1200
81°F
NW
22 mph
22 mph
1500
81°F
NW
24 mph
24 mph
1800
81°F
NW
22 mph
22 mph
2100
79°F
NW
22 mph
22 mph
May 19, tuesday
0000
79°F
NW
21 mph
21 mph
0300
79°F
NW
21 mph
21 mph
