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Galveston, TX Marine Weather Forecast

Overnight - 84°F
Aug 18, 2026
10 mph SW
Partly Cloudy
Partly cloudy, with a low around 84. Southwest wind around 10 mph.
Tuesday - 88°F
Aug 18, 2026
5 to 15 mph SW
Mostly Sunny
Mostly sunny, with a high near 88. Heat index values as high as 101. Southwest wind 5 to 15 mph.
Tuesday Night - 85°F
Aug 18, 2026
15 mph SW
Partly Cloudy
Partly cloudy, with a low around 85. Heat index values as high as 101. Southwest wind around 15 mph, with gusts as high as 20 mph.
Wednesday - 88°F
Aug 19, 2026
10 to 15 mph SW
Mostly Sunny
Mostly sunny, with a high near 88. Heat index values as high as 101. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night - 85°F
Aug 19, 2026
15 mph S
Mostly Clear
Mostly clear, with a low around 85. South wind around 15 mph, with gusts as high as 25 mph.
Thursday - 88°F
Aug 20, 2026
10 to 15 mph SW
Sunny
Sunny, with a high near 88.
Thursday Night - 85°F
Aug 20, 2026
15 mph SW
Mostly Clear
Mostly clear, with a low around 85.
Friday - 88°F
Aug 21, 2026
10 to 15 mph SW
Sunny
Sunny, with a high near 88.
Friday Night - 84°F
Aug 21, 2026
15 mph SW
Mostly Clear
Mostly clear, with a low around 84.
Saturday - 88°F
Aug 22, 2026
10 to 15 mph SW
Sunny
Sunny, with a high near 88.
Saturday Night - 84°F
Aug 22, 2026
15 mph SW
Mostly Clear
Mostly clear, with a low around 84.
Sunday - 88°F
Aug 23, 2026
10 to 15 mph SW
Sunny
Sunny, with a high near 88.
Sunday Night - 84°F
Aug 23, 2026
15 mph SW
Mostly Clear
Mostly clear, with a low around 84.
Monday - 88°F
Aug 24, 2026
10 to 15 mph SW
Sunny
Sunny, with a high near 88.

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