All data are in degrees Fahrenheit

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Water temperature in Galveston

Detailed information about the current water temperature in Galveston. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Galveston now

87.1

°F

September 25, 04:10

Trend:

decreasing

Yesterday:

88.5°F

Tomorrow:

87.0°F

Sunrise:

07:09

Sunset:

19:12

Day Length:

12 h. 3 min.

Galveston in October

Minimum:

55.4°F

Average:

59.8°F

Maximum:

66.0°F

Sea water temperature in Galveston today

As of now, in Galveston, the water temperature is 87.1°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 3.0°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's reading indicates a minor change compared to the average water temperature of the last two weeks, but the overall trend remains steady. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 86.0°F on 2022, while the historical minimum was 80.0°F on 2021.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 86.0°F, the minimum temperature may reach 84.9°F, and the maximum might stay at 87.0°F.

Daily water temperature in Galveston

Date Current Year

actual* / forecast**

last year 10 years average
Sep 11 87.4°F 84.4°F 85.0°F
Sep 12 87.0°F 84.8°F 84.8°F
Sep 13 87.0°F 84.5°F 84.8°F
Sep 14 87.0°F 85.3°F 84.7°F
Sep 15 87.2°F 85.6°F 84.8°F
Sep 16 87.1°F 85.6°F 84.8°F
Sep 17 87.0°F 85.3°F 84.5°F
Sep 18 85.9°F 85.0°F 84.5°F
Sep 19 86.7°F 85.5°F 84.5°F
Sep 20 86.3°F 85.5°F 84.6°F
Sep 21 86.7°F 85.1°F 84.7°F
Sep 22 86.6°F 85.4°F 84.8°F
Sep 23 87.6°F 85.6°F 84.8°F
Sep 24 88.5°F 85.3°F 84.8°F
Sep 25 87.1°F 85.3°F 84.1°F
Sep 26 87.0°F 85.0°F 84.0°F
Sep 27 86.5°F 84.6°F 83.5°F
Sep 28 86.2°F 84.3°F 83.2°F
Sep 29 86.2°F 83.8°F 83.2°F
Sep 30 85.8°F 84.1°F 82.8°F
Oct 1 85.2°F 83.6°F 82.2°F
Oct 2 84.9°F 83.9°F 81.9°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Galveston by month

In Galveston, the months May through October offer comfortable swimming conditions, which amounts to 192 swimming days.
The warmest water in Galveston was recorded on August 18, 2024, reaching a 90.5°F. While the coldest temperature occurred on January 26, 2025, dipping to 49.7°F. The average readings by season are 60.1°F in Winter, 72.1°F in Spring, 85.7°F in Summer, and 78.0°F in Autumn.