San Antonio weather in March
Temperature, rain and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Good
Best time to visit: October – April
What is the weather like in San Antonio in March?
In March, San Antonio is warm: daytime highs average 23 °C, and nights cool down to about 12 °C. Expect around 5 hours of sunshine a day. Rain falls on about 9 days, adding up to 67 mm. All in all, March is a good month for a holiday in San Antonio.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 81 | 78 | 82 |
| Day | 19° | 23° | 27° |
| Night | 8° | 12° | 16° |
| Sun | 5 h | 5 h | 6 h |
| Rain days | 7 | 9 | 8 |
More details for March
- Daylight
- 11 h 57 min07:45 – 19:42
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 3 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 2 days30 °C or moreAll months
- Time zone
- UTC−5America/Chicago
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 30 %68 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
San Antonio in March: quick answers
Is San Antonio hot in March?
Warm rather than hot: in March, daytime highs in San Antonio average 23 °C and nights cool to about 12 °C. On about 2 days the thermometer climbs to 30 °C or more.
Does it rain much in San Antonio in March?
Rain falls on about 9 days, adding up to 67 mm.
San Antonio month by month
The whole year in San AntonioAll destinations: USAWhere to go in March
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences