Weather in Galveston Island: January
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Average day temperature: | 58.6°F |
| Average night temperature: | 53.8°F | |
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Sea water temperature: | 59.0°F |
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Number of sunny days: | 12 days |
| Day length: | 10.3 - 10.8 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.3 in. | |
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forecast
| Galveston Island |
temperature
| Galveston Island |
Air temperature in January, °F
| Day temperature | Night temperature |
The highest day temperature during January of 2025 was 66°F. At the same time the lowest night temperature was 35°F. Day and night temperature averages during January were 52.0°F and 50.7°F.
Sea water temperature in Galveston Island in January, °F
The average sea water temperature in January of 2025 was 56.9°F. The highest and lowest sea temperatures during the month were 66.0°F and 49.5°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Mostly all days in January are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in January, in.
Precipitation total value in Galveston Island in January is 1.3 in. Other months of the year show relatively similar values.
The average wind speed value in January is 11.2 mph It makes January one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 5.6.
Best time for vacation in Galveston Island
Galveston Island on a weather map
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