Weather in San Antonio: January
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Average day temperature: | 67.2°F |
| Average night temperature: | 57.6°F | |
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Sea water temperature: | 60.7°F |
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Number of sunny days: | 29 days |
| Day length: | 13.7 - 14.3 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.1 in. | |
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| San Antonio |
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| San Antonio |
Air temperature in January, °F
| Day temperature | Night temperature |
The highest day temperature during January of 2025 was 69°F. At the same time the lowest night temperature was 53°F. Daily and nightly averages during January were 66.7°F and 57.1°F.
Sea water temperature in San Antonio in January, °F
The average sea water temperature in January of 2025 was 61.9°F. The highest and lowest sea temperatures during the month were 65.7°F and 59.2°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Almost all days of January in San Antonio are sunny. Cloudy days are rare.
Precipitation total in January, in.
Precipitation total value in San Antonio in January is 0.1 in. Other months of the year show relatively similar values.
The average wind speed value in January is 7.9 mph
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: 12.8.
Best time for vacation in San Antonio
San Antonio on a weather map
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