San Antonio Missions National Historical Park in May
May at San Antonio Missions National Historical Park averages a daytime high near 88°F and an overnight low around 68°F, with about 3.9" of precipitation. Visitation runs about 1× the park's average month, which makes May an average month here.
- Average low
- 68°F
- Average high
- 88°F
Range across the year: 42°F to 98°F
- Precipitation
- 3.9 in
- Daylight
- 13.5 hours
Roughly 9% of the park's yearly visitors come in May: about 110,000 recreation visits in a typical year, based on National Park Service monthly counts from 1983 to 2025.
That makes May the 6th-busiest of the park's twelve months, sitting between the July peak (1.2×) and the November low (0.8×).
On our Best Time to Visit score May rates 49/100 ("Fair"). Our recommended month is February: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 78°F is warm enough that midday heat is worth planning around. These figures are 1991–2020 NOAA climate normals from the nearest station, about 3.2 miles from the park.
Because June, July and August together draw about 28% of annual visitors, choosing May instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 13.5 hours of daylight in May to explore — between the 10.1-hour midwinter low and the 13.9-hour summer high.
Park-wide, 2025 drew 1,552,510 recreation visits, up 21.4% from 1,278,777 in 2024.
How May compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| April | 82°F / 60°F | 1.1× Average | 53 Fair |
| May | 88°F / 68°F | 1.0× Average | 49 Fair |
| June | 94°F / 74°F | 1.1× Average | 23 Poor |
All twelve months at San Antonio Missions, with the best time to visit.
Things to do at San Antonio Missions in May
The National Park Service tags 3 San Antonio Missions activities for spring. Each links to the park's own page for it.
- Explore the Missions of San Antonio · 0-4 hours
- Hike & Bike Along the River · 15-240 minutes
- Junior Ranger Program · 15-60 minutes
Frequently Asked Questions
May averages a daytime high near 88°F and an overnight low around 68°F at San Antonio Missions National Historical Park, with about 3.9 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 3.2 miles from the park, so conditions inside the park can differ, especially at other elevations.
May is average at San Antonio Missions National Historical Park (about 1.0× the average month). Our best-time score rates it "Fair" at 49/100. Our recommended month is February.
The busiest month is July and the quietest is November. May sits at about 1.0× the park's average, or 9% of annual visitation.
A typical May sees about 110,000 recreation visits at San Antonio Missions National Historical Park, based on National Park Service monthly counts from 1983–2025.
Where to stay near San Antonio Missions in May
Booking a May trip to San Antonio Missions National Historical Park? Compare hotels, cabins and vacation rentals near the park with live May availability and prices.
Top-rated places to stay near San Antonio Missions
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See the full ranking of the best national parks to visit in May.
Source: National Park Service Visitor Use Statistics (1983–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.