San Antonio Weather in March
March in San Antonio brings pleasant temperatures, with highs of 18°C (64°F) and nights dropping to 12°C (54°F). With excellent weather conditions overall, it's a good time to visit.
Rainfall in San Antonio in March
Records from the past 30 years suggest around 12 days of rain, with 24 mm (0.9 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in San Antonio in March
Weather in San Antonio is at its excellent in March. Highs reach 18°C (64°F), while nights settle around 12°C (54°F). Conditions are often most pleasant around the middle of the day. Nights cool down to 12°C (54°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 212 hours of sun. These sunny conditions add to the overall experience.
Average water temperature in March
The water temperature is 15°C (59°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.Our weather planner can help you find worldwide destinations with pleasant weather during this period. March, April, May, June, September, October and November typically offer the best weather for San Antonio.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our San Antonio's climate page.
San Antonio Temperature in March
Min Temperature
12°C (54°F)
Max Temperature
18°C (64°F)
Water Temperature
15°C (59°F) *
Chance of Rain
39%
Precipitation
24 mm (0.9 in)
Rainy days
12 days
Humidity
72% *
Sunshine
212 hours *
Percentage Sunshine
57% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Antonio typically stay consistent throughout March, with daily highs averaging around 18°C (64°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 11°C (52°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.
- San Antonio recorded its highest March temperature of 26°C (79°F) on March 31, 2023.
- On March 10, 1984, San Antonio saw its coldest March day with temperatures maxing out at 7°C (45°F).
- The coldest night in March in San Antonio was on March 12, 1984, with a minimum of 1°C (34°F).
Best Places in Spain in March
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain 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. Some rain is possible, so pack something to handle light showers. Expect water temperatures of around 15°C (59°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.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 Spain, check out our San Antonio's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full San Antonio climate overview or explore weather in Spain.
