San Antonio Weather in March
What's the weather like in San Antonio (Magdalena) in March 2026?
The climate in San Antonio during March can be summarized as very hot, humid and dry.
March is in the spring in San Antonio and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 36°C (96°F), whilst at night 22°C (72°F) is normal.
| Daytime temperature | 35.7°C 96.3°F |
|---|---|
| Nightly temperature | 22.3°C 72.1°F |
| Average temperature | 29°C 84.2°F |
| Daily sunshine | 7.1 hrs |
| Avg rainfall | 29 mm 1.2 ins |
| Rainy days | 1 days |
| Sea temperature | 27.4°C 81.4°F |
| Humidity | 72% |
| Windspeed | 14.8kph 9 mph |
On average March is the 3rd driest month of the year in San Antonio with around 29mm 1.2 inches of rain making it a dry time to visit. This rainfall is typically spread over 1 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 hours of sunshine per day.
March temperatures in San Antonio
March rainfall
March hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Antonio in March 2025.
Other monthly averages
San Antonio weather stats
| Hottest month: | March | 35.4°C 95.7°F |
|---|---|---|
| Driest month: | January | 19mm 0.7ins |
| Sunniest month: | January | 8.2hrs |
| Coldest month: | October | 32°C 89.6°F |
| Wettest month: | October | 161mm 6.3ins |
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