San Antonio Weather in April
What's the weather like in San Antonio (Magdalena) in April 2026?
The climate in San Antonio during April can be summarized as very hot, humid and a little damp.
April is in the spring in San Antonio and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 35°C (95°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 35°C 95°F |
|---|---|
| Nightly temperature | 22.8°C 73°F |
| Average temperature | 28.9°C 84°F |
| Daily sunshine | 6.2 hrs |
| Avg rainfall | 92 mm 3.6 ins |
| Rainy days | 4 days |
| Sea temperature | 27.8°C 82°F |
| Humidity | 74% |
| Windspeed | 13.7kph 9 mph |
On average April is the 5th driest month of the year in San Antonio with around 92mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.2 hours of sunshine per day.
April temperatures in San Antonio
April rainfall
April 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 April 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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