San Antonio Weather in March
San Antonio in March averages 24°C (75°F) during the day and 11°C (52°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in San Antonio in March
You can expect rain on around 8 days based on historical patterns, with 65 mm (2.6 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in San Antonio in March
The perfect temperature in San Antonio in March makes it a solid month to visit, with 24°C (75°F) during the day and 11°C (52°F) at night. This kind of day-to-night contrast is typical for this time of year. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in San Antonio in March
Expect a lot of sunshine this month, with about 216 hours of sun. These sunny conditions add to the overall experience.If you're inclined towards comfortable temperatures and drier conditions, March is a good time to visit San Antonio.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Antonio's climate page.
San Antonio Temperature in March
Min Temperature
11°C (52°F)
Max Temperature
24°C (75°F)
Chance of Rain
25%
Precipitation
65 mm (2.6 in)
Rainy days
8 days
Humidity
63%
Sunshine
216 hours
Percentage Sunshine
58%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Antonio typically rise from around 22°C (72°F) at the start of March to approximately 25°C (77°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 14°C (57°F).
Average temperatures in March
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in March
Historical weather for San Antonio in March
Browse day-by-day weather records for San Antonio spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Antonio historical weather extremes in March
Based on 50 years of weather observations in San Antonio between 1976 and 2026, these are the recorded extremes.
- On March 14, 2025, temperatures climbed to 36°C (97°F), marking the warmest March day on record.
- San Antonio registered its coldest March night on March 4, 2002, with temperatures dropping to -6°C (21°F).
Best Places in the United States of America in March
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in March →
perfect weather
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What to Wear in San Antonio in March
For San Antonio in March, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in San Antonio in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Antonio's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Antonio climate overview or explore weather in the United States of America.
