San Antonio, TX weather in April
April in San Antonio: warm, with some rain. Highs 80°F, lows 58°F, rain on about 6 days. A good month for most outdoor plans.
- Normal high
- 80°F
- Normal low
- 58°F
- Wet days
- 6
- 2.4 in total
- Muggy days
- 7
- dew point 65°F+
How April changes from start to finish
| April 1 | April 30 | |
|---|---|---|
| Normal high | 78°F | 83°F |
| Normal low | 55°F | 62°F |
| Chance of a wet day | 24% | 23% |
| Sunrise / sunset | 7:23 am / 7:52 pm | 6:52 am / 8:09 pm |
| Daylight | 12.5 h | 13.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical April day
- 6 am62°Fdew point 57°F
- 9 am68°Fdew point 58°F
- Noon76°Fdew point 57°F
- 3 pm80°Fdew point 56°F
- 6 pm78°Fdew point 56°F
- 9 pm70°Fdew point 58°F
NOAA hourly normals (local standard time) from San Antonio Kelly AFB (6 mi away); average wind 9 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F8 of 30
- Hot dayshigh 90°F or more3 of 30
- Muggy daysdaily mean dew point 65°F or more7 of 30
- Wet daysat least 0.01 in of rain or melted snow6 of 30
- Notable rainat least 0.10 in4 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per April, counted from daily records for each year 1991-2020.
Rain in April
Normal precipitation is 2.4 in; a dry April brings about 0.8 in and a wet one about 3.5 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How April varies from year to year
- Warmest April, 1991-20202006: average high 89°F
- Coolest April1997: average high 74°F
- Wettest April2015: 7.5 in
- Driest April2005: 0.01 in
- Highest reading101°F (April 19, 1996)
- Lowest reading35°F (April 8, 2007)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
April compared with March and May
| March | April | May | |
|---|---|---|---|
| Normal high | 74°F | 80°F | 87°F |
| Normal low | 52°F | 58°F | 66°F |
| Wet days | 9 | 6 | 8 |
| Comfortable days | 14 | 8 | 2 |
| Daylight | 12.0 h | 12.9 h | 13.6 h |
Highs change by +6°F from March and +7°F into May.
Nearby alternatives in April
- Warmer: Laredo, TX146 mi · high 88°F · 4 wet days
How San Antonio ranks in April
- Normal high43rd warmest of 378 cities; 10th of 38 in Texas
- Wet days110th driest of 378
- Comfortable days225th most of 340
Heating and cooling
April has 35 heating degree days and 166 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is San Antonio in April?
The normal high is 80°F and the normal low is 58°F. From 1991 to 2020 the hottest April reading was 101°F (April 19, 1996).
Does it rain a lot in San Antonio in April?
About 6 days in April have at least 0.01 in of precipitation, and the normal total is 2.4 in. The wettest April in 1991-2020 was in 2015 (7.5 in); the driest was in 2005 (0.01 in).
Is April a good time to visit San Antonio?
April ranks 6th of 12 months on our comfort score for San Antonio (61 out of 100). It has about 8 comfortable days and about 3 days at 90°F or hotter. The best months are February, March and November.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: San Antonio Intl Airport (USW00012921), 8.3 mi N of the city center, 789 ft (140 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: San Antonio Kelly AFB (USW00012909), 6.1 mi WSW of the city center, 682 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: San Antonio International Airport (722530-12921), 8.3 mi N of the city center, 799 ft (150 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).