San Antonio, Texas Weather in May

Warm days, wet spells

May feels like the start of San Antonio's hot season. Afternoons reach 32°C, while evenings stay warm. It's hotter than April, and June gets hotter still. Rain comes on several days, often making the air feel sticky.

You can enjoy the River Walk, the Alamo and the historic missions, but shade and indoor breaks help during the afternoon. A sudden shower can interrupt a long walk, so keep the San Antonio Museum of Art or the shops at Pearl in mind as a backup. The River Walk can also feel humid after rain.

May events

Fiesta San Antonio usually takes place in April, though its dates sometimes reach into early May. If your visit overlaps, expect parades and events to bring extra energy—and more people—to downtown. Cinco de Mayo celebrations may also add music and crowds around town.

Families who enjoy festivals may like the lively streets, but quieter sightseeing is easier away from event areas. May's Memorial Day weekend can draw more visitors, too.

Crowds and local tips

May sits between San Antonio's cooler, generally popular months and the busier summer travel season. Outside Fiesta and holiday weekends, crowds are often more manageable than in peak summer. Prices can rise around major events, so quieter dates may be kinder to your budget.

For a cooler, calmer mission visit, take the VIA bus along the Mission Reach route to Mission San José, then explore the grounds before the hottest part of the day. Afterward, return toward the Pearl for a shaded break and a bowl of local menudo, a spicy tripe soup.