Lt. Austin Kirwin said beach patrol was called to the scene at about 12:30 a.m. near Tower 47, close to the Seawall and 45th Street.
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Kirwin said the woman's friends told beach patrol she walked about halfway out on a jetty, while they stayed on shore. She appeared to slip into the water. They lost sight of her and called 911. Within ten minutes, beach patrol had pulled the woman from the water.
Galveston police and fire departments conducted CPR on the woman, and she was taken by Galveston EMS to UTMB, where she was pronounced dead.
The woman's identity has not been released by authorities.
Kirwin said the woman's death marked the fourth drowning on Galveston Island this year. He said on average there are about seven to eight drownings a season.
SEE ALSO: 1 dead, dozens rescued on Galveston beaches amid dangerous currents, officials say
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