Month guide · San Antonio · United States
San Antonio in May
What May is really like in San Antonio: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Zereshk, CC BY-SA 3.0
Quick answer
May is a shoulder-season month. Expect average highs of 31°C (88°F), lows of 19°C (66°F), about 8 rainy days and roughly 13.6 hours of daylight. Hot and humid with the year's heaviest rain risk; storms can cause flash flooding.
Key facts
- Average high / low
- 31°C (88°F) / 19°C (66°F)
- Rainy days
- About 8
- Daylight
- About 13.6 hours
- Crowds
- Busy
- Hotel prices
- High
Weather in May
May is the 5th-warmest month in San Antonio: days average 31°C (88°F) against a yearly average high of 27°C (81°F), and nights fall to about 19°C (66°F). Rain falls on roughly 8 of its 31 days. Compared with April (28°C (82°F)), May is warmer; by June highs climb to around 34°C (93°F).
- Sunrise (15 May)
- About 06:41
- Sunset (15 May)
- About 20:19
- Daylight
- About 13.6 hours
Spring (March–May). Warm and green, with bluebonnets, Fiesta in April and spring-break crowds; May can bring heavy storms.
Crowds and prices
On a 1–5 scale, May rates 4 for crowds (the peak is April at 5) and 4 for hotel prices (highest in April). Book accommodation early: May is one of the pricier months.
Events in May
- Tejano Conjunto Festival (usually May)
- Cinco de Mayo celebrations at Market Square
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in May
Mild, settled days suit walking, viewpoints and time outdoors.
.jpg){kind=link}
Viewpoint · Hemisfair
Tower of the Americas
Go up shortly before sunset to see the city in daylight and as the lights come on.
- Time needed
- 1 hour
- Cost
- Mid-priced
- Views
- After dark
- Kids
- Couples
Park · Hemisfair
Yanaguana Garden at Hemisfair
A large free playground on the former world's fair grounds, with climbing structures, a splash pad, sand areas and giant board games, surrounded by restored historic houses and cafés.
- Time needed
- 1–2 hours
- Cost
- Free
- Kids
- Free
- Outdoors
Garden · Brackenridge Park
Japanese Tea Garden
Visit in the morning when the light falls on the waterfall, then walk to the zoo next door.
- Time needed
- 45 minutes
- Cost
- Free
- Free
- Couples
- Photo spot
- Outdoors
Zoo · Brackenridge Park
San Antonio Zoo
A long-established zoo in Brackenridge Park with an African savanna area, big cats, hippos, a children's area and a large collection of birds and reptiles, set among limestone cliffs from the old quarries.
- Time needed
- 3 hours
- Cost
- Mid-priced
- Kids
- Outdoors
- Nature
What to pack
For highs near 31°C, lows near 19°C and 8 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; a packable rain jacket for showers; comfortable walking shoes.
Is May a good time to visit San Antonio?
A shoulder-season month, with 2 notable events on the calendar. If your dates are flexible, March–April and October–November are better overall. Compare every month.
San Antonio in other months
Questions travellers ask
+Is May a good time to visit San Antonio?
It is a shoulder-season month. Hot and humid with the year's heaviest rain risk; storms can cause flash flooding.
+How warm is San Antonio in May?
Average highs are around 31°C (88°F) and lows around 19°C (66°F).
+Does it rain a lot in San Antonio in May?
Expect rain on about 8 days of the month.