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Galveston, USA Weather Averages

. The most daily sunshine hours in Galveston are 12 in June. The best month to swim in the sea is in August when the average sea temperature is 30°C (86°F).

Average Daily Sunshine Hours Galveston

What are Average Daily Sunshine Hours?
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer
What are Average Daily Sunshine Hours?
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer

Average Sea Temperature Galveston

What is Average Sea Temperature?
Average daily sea temperatures and divided by the number of days in the month. Sea Temperatures are taken from buoys, ships and even satellites can calculate sea temperature based on energy that is radiated from the sea's surface
What is Average Sea Temperature?
Average daily sea temperatures and divided by the number of days in the month. Sea Temperatures are taken from buoys, ships and even satellites can calculate sea temperature based on energy that is radiated from the sea's surface

Galveston : Next 24-Hour Weather

Tomorrow - 9th January 2026

Sunrise 07:17

Sunrise

Sunset 17:40

Sunset
22:00
Mist
22°C (72°F)
23:00
Mist
22°C (71°F)

Tomorrow - 10th January 2026

Sunrise 07:17

Sunrise

Sunset 17:40

Sunset
0:00
Mist
22°C (71°F)
1:00
Light drizzle
21°C (70°F)
2:00
Heavy rain at times
21°C (69°F)
3:00
Patchy light drizzle
21°C (68°F)
4:00
Patchy rain possible
20°C (67°F)
5:00
Patchy light drizzle
20°C (67°F)
6:00
Partly cloudy
19°C (66°F)
7:00
Clear
19°C (65°F)
8:00
Overcast
18°C (64°F)
9:00
Overcast
17°C (62°F)
10:00
Cloudy
16°C (60°F)
11:00
Partly cloudy
16°C (60°F)
12:00
Partly cloudy
17°C (61°F)
13:00
Partly cloudy
17°C (62°F)
14:00
Cloudy
17°C (61°F)
15:00
Overcast
16°C (61°F)
16:00
Overcast
16°C (60°F)
17:00
Overcast
16°C (59°F)
18:00
Overcast
15°C (58°F)
19:00
Overcast
14°C (57°F)
20:00
Overcast
14°C (56°F)
21:00
Overcast
13°C (54°F)