15.05
fri
fri
Day
81°F
N 16 mph
Precip.
0%
0%
Night
77°F
N 21 mph
Precip.
0%
0%
16.05
sat
sat
Day
79°F
N 18 mph
Precip.
74%
74%
Night
77°F
NW 22 mph
Precip.
60%
60%
17.05
sun
sun
Day
79°F
NW 20 mph
Precip.
0%
0%
Night
79°F
N 22 mph
Precip.
70%
70%
18.05
mon
mon
Day
79°F
NW 22 mph
Precip.
0%
0%
Night
79°F
NW 23 mph
Precip.
0%
0%
19.05
tue
tue
Day
79°F
NW 16 mph
Precip.
67%
67%
Night
79°F
NW 12 mph
Precip.
40%
40%
20.05
wed
wed
Day
79°F
NW 16 mph
Precip.
100%
100%
Night
79°F
NW 16 mph
Precip.
0%
0%
21.05
thu
thu
Day
81°F
N 14 mph
Precip.
0%
0%
Night
79°F
N 12 mph
Precip.
0%
0%
22.05
fri
fri
Day
81°F
NW 9 mph
Precip.
0%
0%
Night
79°F
NW 10 mph
Precip.
0%
0%
23.05
sat
sat
Day
79°F
NW 11 mph
Precip.
76%
76%
Night
79°F
NW 11 mph
Precip.
25%
25%
24.05
sun
sun
Day
81°F
NW 11 mph
Precip.
66%
66%
Night
79°F
NW 14 mph
Precip.
0%
0%
25.05
mon
mon
Day
81°F
NW 15 mph
Precip.
0%
0%
Night
79°F
NW 17 mph
Precip.
0%
0%
26.05
tue
tue
Day
81°F
N 15 mph
Precip.
59%
59%
Night
79°F
NW 17 mph
Precip.
0%
0%
27.05
wed
wed
Day
81°F
NW 13 mph
Precip.
49%
49%
Night
79°F
NW 17 mph
Precip.
0%
0%
28.05
thu
thu
Day
81°F
NW 12 mph
Precip.
20%
20%
Night
79°F
NW 12 mph
Precip.
0%
0%
sea water
temperature
temperature
| Galveston |
monthly
weather
weather
| Galveston |
current
weather
weather
| Galveston |
7 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 76.8°F. The highest and lowest sea temperatures during the month were 78.4°F and 75.4°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: 09:56
May 15, friday
1200
81°F
N
16 mph
16 mph
1500
81°F
N
18 mph
18 mph
1800
77°F
N
17 mph
17 mph
2100
77°F
N
17 mph
17 mph
May 16, saturday
0000
77°F
N
21 mph
21 mph
0300
77°F
N
20 mph
20 mph
0600
77°F
N
15 mph
15 mph
0900
77°F
NW
16 mph
16 mph
