Galveston Weather Conditions

View the weekly forecast and typical seasonal weather conditions in Galveston, TX to get a general understanding of weather conditions to expect during your next trip.

Looking to get a feel for what the weather will be like during your visit? With low chances of rain and temperatures that usually range anywhere from the 60s in the winter to 90s in the summer, chances are good the weather will be excellent no matter when you’re planning on coming to see us.

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Tuesday, Jan 31
H: 49°   L: 42°
Weather icon Overcast throughout the day.

Overcast throughout the day.

Wednesday, Feb 01
H: 51°   L: 43°
Weather icon Possible light rain in the morning and overnight.

Possible light rain in the morning and overnight.

Thursday, Feb 02
H: 51°   L: 43°
Weather icon Rain in the morning and afternoon.

Rain in the morning and afternoon.

Friday, Feb 03
H: 57°   L: 41°
Weather icon Partly cloudy throughout the day.

Partly cloudy throughout the day.

Saturday, Feb 04
H: 63°   L: 45°
Weather icon Mostly cloudy throughout the day.

Mostly cloudy throughout the day.

Sunday, Feb 05
H: 68°   L: 51°
Weather icon Clear throughout the day.

Clear throughout the day.

Monday, Feb 06
H: 67°   L: 50°
Weather icon Mostly cloudy throughout the day.

Mostly cloudy throughout the day.

Tuesday, Feb 07
H: 72°   L: 63°
Weather icon Rain overnight.

Rain overnight.

Flag Warning System

The Flag Warning System is used to advise beach patrons of the current water conditions and any applicable environmental warnings. The flag colors are part of a national system employed to help beach-goers understand the current conditions in the always dynamic environment of open water.

Green Flag

Indicates that conditions are calm. Swim with care.

Yellow Flag

Indicates caution should be used when entering any body of water. This flag is flown for normal conditions to remind swimmers to stay alert.

Red Flag

Flown when conditions are determined to be out of the ordinary, such as presence of strong wind, strong current or large surf. Adult swimmers should stay in water no more than waist deep and non-swimmers and children should be kept along the surf line.

Purple Flag

Indicates a potential problem with jellyfish, Portuguese man-o-war, stingrays or other marine life that could be a hazard for swimmers. Purple flags will be used in combination with other flags.

Orange Flag

Indicates there is an environmental warning for air and/or water quality. Ask the Lifeguard for more details. Orange pennant flags will be used in combination with other flags.

Average Air Temperatures in Galveston, TX

Not sure how to pack for your visit to Galveston? Get an idea of the average temperatures depending on the season.

Spring (March - May)

High 75° F / Low 65° F

Summer (June - August)

High 85° F / Low 79° F

Fall (September - November)

High 78° F / Low 67° F

Winter (December - February)

High 62° F / Low 50° F


Average Water Temperatures in Galveston, TX

According to the World Health Organization, water temperatures between 78 and 86 ° F are generally comfortable and safe for swimming. Usually, by the end of March, sea temperatures are warm enough for swimming.

Spring (March - May)

Average Water Temperature: 71.6° F

Summer (June - August)

Average Water Temperature: 84.2° F

Fall (September - November)

Average Water Temperature: 77° F

Winter (December - February)

Average Water Temperature: 60.8° F


Average Precipitation in Galveston, TX

Sun lovers will find plenty of golden rays in Galveston. Our overall low chances of rain mean the odds are good that you’ll find the perfect weather for your island getaway. May and October are typically our driest months, followed by June.

Spring (March - May)

Average Precipitation: 17%

Summer (June - August)

Average Precipitation: 20%

Fall (September - November)

Average Precipitation: 18%

Winter (December - February)

Average Precipitation: 19%


Average Humidity in Galveston, TX

Our ocean breeze keeps Galveston comfortable year-round. Our least humid month is typically October, while our most humid month is December.

Spring (March - May)

Average Humidity: 72%

Summer (June - August)

Average Humidity: 69%

Fall (September - November)

Average Humidity: 65%

Winter (December - February)

Average Humidity: 75%

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