Weather in San Antonio in April 2025
Average weather
Average temperature in San Antonio in April
Going from a maximum of +93°F during the day to a minimum of +48°F during the night, the temperature in April averages around +81°F.
The average maximum temperature goes up 4% by the end of the month, compared with the beginning of the month, from +88°F to +90°F.
Is San Antonio warm or cold in April?
San Antonio is typically warm in April.
Maximum temperatures go up compared to the previous month from +75°F to +82°F. The minimum temperature also goes up from +54°F to +61°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how April is compared to other months in San Antonio:
Climate in San Antonio in April
| March | April | May | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +75°F | +82°F | +88°F | ||||
| Min. temperature | ||||||
| +23°F | +32°F | +43°F | ||||
| Max. temperature | ||||||
| +97°F | +100°F | +102°F | ||||
| Rainfall | ||||||
| 73 mm | 76 mm | 132 mm | ||||
| Wind | ||||||
| 3 m/s | 4 m/s | 4 m/s | ||||
| Humidity | ||||||
| 69% | 69% | 73% | ||||
| Air pressure | ||||||
| 1015 HPa | 1013 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 8 | 8 | 5 | ||||
| Cloudy days | ||||||
| 9 | 8 | 8 | ||||
| Rainy days | ||||||
| 14 | 13 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
April weather is still as good as in March. It’s getting warmer as April arrives. The average maximum temperature goes up from +75°F to +82°F during the day. Prepare for more rain. Average rainfall goes from 73 mm to 76 mm. Humidity levels don’t change as the month goes on, averaging around 69%. Winds are stronger in comparison to March, going up from 3 m/s to 4 m/s on average. The amount of sunny days stay about the same, averaging 8 sunny days during the month.
May brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in San Antonio is gradually increasing during April, going from 3 m/s to 3 m/s over the course of the month.
Rain
How was the weather last April in San Antonio?
Climate Change Over the Years
The climate in San Antonio in April has not changed that much over the last 43 years.
The average temperature was the lowest in 1983 (+77°F) and the highest in 2006 (+85°F). The driest year was 1996 with only 401 mm of rainfall, and the wettest year was 2007 with 1606 mm.
FAQ
Is April a good time to visit San Antonio?
Can you sunbathe in San Antonio in April?
Is San Antonio rainy in April?
Is it sunny in San Antonio in April?
Other cities in USA
Monthly weather in San Antonio
Source of the data
For this page, we’ve looked at the typical weather in San Antonio, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.