San Antonio · April
Run in the morning.
Comfortable average high of 81°F, dipping to 61°F at night. Expect 15 rain days — plan around the radar. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
Avg high / low
81° / 61°F
Humidity
66%
Rain days
15/mo
Wind
14 mph
What April feels like in San Antonio
Sunrise
07:07
Mid-month average
Sunset
20:01
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in San Antonio in April
The kit for April in San Antonio: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
April vs the surrounding months
vs March
+6° avg high
0 rain days
San Antonio in March →
April
81°F avg high
15 rain days
Best: morning
vs May
-5° avg high
-5 rain days
San Antonio in May →
Frequently Asked Questions
What is the best time of day to run in San Antonio in April?+
Morning. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
What's the average temperature in San Antonio in April?+
Average high 81°F, average low 61°F.
How does April compare to surrounding months in San Antonio?+
Compared to March (avg high 75°F), April is warmer. Compared to May (avg high 86°F), April is cooler.
Does it rain often in San Antonio in April?+
Expect about 15 measurable rain days in April, on average.