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The temperatures in San Antonio in January are quite cold with temperatures between 8°C and 17°C, warm clothes are a must.
The wather in San Antonio in January can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in San Antonio in January 2025.
If you’re planning to visit San Antonio in the near future, we highly recommend that you review the 14 day weather forecast for San Antonio before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 17° / 8° | 2 | 29 | 0 | 38 mm | Good | San Antonio in January |
| February | 19° / 9° | 2 | 26 | 0 | 32 mm | Good | San Antonio in February |
| March | 23° / 13° | 3 | 28 | 0 | 46 mm | Perfect | San Antonio in March |
| April | 27° / 16° | 5 | 25 | 0 | 68 mm | Perfect | San Antonio in April |
| May | 31° / 20° | 7 | 24 | 0 | 115 mm | Ok | San Antonio in May |
| June | 34° / 23° | 5 | 25 | 0 | 90 mm | Ok | San Antonio in June |
| July | 35° / 24° | 4 | 27 | 0 | 69 mm | Ok | San Antonio in July |
| August | 36° / 25° | 2 | 29 | 0 | 54 mm | Ok | San Antonio in August |
| September | 32° / 23° | 7 | 23 | 0 | 142 mm | Ok | San Antonio in September |
| October | 28° / 18° | 3 | 28 | 0 | 58 mm | Perfect | San Antonio in October |
| November | 22° / 13° | 2 | 28 | 0 | 40 mm | Good | San Antonio in November |
| December | 18° / 9° | 3 | 28 | 0 | 42 mm | Good | San Antonio in December |