San Antonio Weather in April
April in San Antonio averages 20°C (68°F) during the day and 14°C (57°F) at night. The perfect conditions and low rainfall make it a solid month to visit.
Rainfall in San Antonio in April
Records from the past 30 years suggest around 10 days of rain, with 28 mm (1.1 in) average for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in San Antonio in April
April is one of the better months to visit San Antonio. Expect 20°C (68°F) during the day and 14°C (57°F) at night. Conditions are often most pleasant around the middle of the day. Nights cool down to 14°C (57°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 April
Enjoy a sunny month with about 245 hours of sunshine, the clear skies make San Antonio even more beautiful.
Average water temperature in April
The water temperature is 16°C (61°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.If you're a fan of comfortable temperatures and drier conditions, April is a great time to visit.
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 April
Min Temperature
14°C (57°F)
Max Temperature
20°C (68°F)
Water Temperature
16°C (61°F) *
Chance of Rain
33%
Precipitation
28 mm (1.1 in)
Rainy days
10 days
Humidity
71% *
Sunshine
245 hours *
Percentage Sunshine
60% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Antonio typically stay consistent throughout April, with daily highs averaging around 20°C (68°F). Nights are cool, with lows typically ranging from 11°C (52°F) to 14°C (57°F).
Average temperatures in April
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 April
Historical weather for San Antonio in April
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 April
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in San Antonio.
- San Antonio recorded its highest April temperature of 27°C (81°F) on April 25, 1992.
- On April 4, 2022, San Antonio saw its coldest April day with temperatures maxing out at 12°C (54°F).
- The coldest night in April in San Antonio was on April 13, 1986, with a minimum of 3°C (37°F).
Best Places in Spain in April
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in April →
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What to Wear in San Antonio in April
Comfortable temperatures call for an easy wardrobe in April. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Light rain is possible, so consider bringing a small umbrella or rain jacket. With water temperatures around 16°C (61°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in San Antonio in April
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.
