Click on a day for an hourly weather forecast
The temperatures in San Marcos in March are usually low and can range between 10°C and 19°C.
The wather in San Marcos in March 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 Marcos in March 2025.
If you’re planning to visit San Marcos in the near future, we highly recommend that you review the 14 day weather forecast for San Marcos before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 19° / 10° | 2 | 29 | 0 | 41 mm | Good | San Marcos in January |
| February | 19° / 10° | 2 | 26 | 0 | 46 mm | Good | San Marcos in February |
| March | 19° / 10° | 2 | 29 | 0 | 34 mm | Good | San Marcos in March |
| April | 21° / 11° | 0 | 30 | 0 | 15 mm | Good | San Marcos in April |
| May | 22° / 13° | 1 | 30 | 0 | 14 mm | Good | San Marcos in May |
| June | 25° / 15° | 0 | 30 | 0 | 3 mm | Perfect | San Marcos in June |
| July | 28° / 18° | 1 | 30 | 0 | 14 mm | Perfect | San Marcos in July |
| August | 29° / 19° | 1 | 30 | 0 | 10 mm | Good | San Marcos in August |
| September | 28° / 19° | 0 | 30 | 0 | 9 mm | Perfect | San Marcos in September |
| October | 25° / 16° | 0 | 31 | 0 | 11 mm | Perfect | San Marcos in October |
| November | 22° / 13° | 1 | 29 | 0 | 27 mm | Good | San Marcos in November |
| December | 18° / 10° | 3 | 28 | 0 | 49 mm | Good | San Marcos in December |