Is San Antonio hot in March?
Days are typically mild at 23.5°C, while nights average 10.4°C.
United States · 1991–2020 normal
Typical March weather in San Antonio: 23.5°C by day, 10.4°C at night, 56 mm of rain over 5.8 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, March scores 85 out of 100 (April leads the year at 86). Daylight is calculated as 11 h 54 from latitude 29.42°.
March at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically mild at 23.5°C, while nights average 10.4°C.
The measured monthly average is 56 mm across about 6 wet days.
There are about 11 h 54 between sunrise and sunset at mid-month, calculated from the place latitude.
March ranks 2 of 12 in our weather comparison; April ranks first.
The evidence behind this page
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The weather comparison for San Antonio is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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