Typical Weather in San Antonio, TX in May
87° F Avg High
66° F Avg Low
4 Rainy Days
☀️ Temperature Summary
May is one of the warmer months of the year for San Antonio, with highs averaging around 87°F. Lows overnight are typically around 66°F.
Be ready to seek shade during the day, as mid-day temperatures can be dangerous if you're caught without a way to cool off. If you're looking to beat the heat a bit, you might consider visiting in April instead, when daily highs are typically closer to 81°.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In May you can expect close to a 13% chance of rain for any given day. It rains more than usual in May, with total rainfall for the month typically near 3 inches.
Rainfall Throughout the Year
Planning a trip to San Antonio? Try our free trip weather planner