World Resorts USA Galveston Island Weather

Galveston Island sea water temperature

Current sea water temperature:
+61.2°F
Minimum sea water temperature in February: 66.2°F
Maximum sea water temperature in February: 52.9°F
Average sea water temperature in February: 58.8°F

Sea water temperature for the last 10 days:

February 26 61.2°F February 21 63.1°F
February 25 62.1°F February 20 60.8°F
February 24 62.2°F February 19 61.9°F
February 23 62.1°F February 18 62.1°F
February 22 61.9°F February 17 63.1°F

When is the warmest sea in Galveston Island?

Based on the data about daily sea water temperature for the last three years the warmest sea in Galveston Island was noticed in August, July and September.

Monthly Sea Temperatures in Galveston Island, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 87.8°F. The highest and lowest sea temperatures during the month were 89.1°F and 86.4°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 86.4°F. The highest and lowest sea temperatures during the month were 88.0°F and 85.1°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 85.5°F. The highest and lowest sea temperatures during the month were 87.4°F and 83.7°F.

Best time for vacation in Galveston Island

Sunniest months:
October 18 days
September 14 days
November 14 days
Warmest months:
August 89.2 °F
July 88.3 °F
June 87.8 °F
Warmest sea temp:
August 87.5 °F
July 86.1 °F
September 85.1 °F
Coldest months:
January 58.6 °F
February 59.9 °F
December 63.4 °F
Rainiest months:
November 3 days
July 3 days
May 3 days
Windiest months:
April 11.7 mph
January 11.5 mph
May 11.0 mph

Galveston Island on a weather map

Galveston Island
+68°F
N 13 mph
Feels like: +68°F
Precip.: 0%
Places in USA:
Name
°F
+52°F
+70°F
+70°F
+63°F
+61°F
+73°F
+75°F
+66°F
+43°F
+63°F
+55°F
+68°F
+68°F
+73°F
+34°F
24 Hours Forecast
Galveston Island
Local time: 12:29
February 26, thursday
1500
68°F
N
12 mph
1800
68°F
N
9 mph
2100
66°F
N
11 mph
February 27, friday
0000
63°F
N
8 mph
0300
63°F
E
2 mph
0600
63°F
SW
5 mph
0900
63°F
SW
6 mph
1200
64°F
SW
4 mph
Units of measurement: °C / °F