San Antonio Weather in May

San Antonio in May sees pleasant temperatures, with highs around 19°C (66°F) and overnight lows of 11°C (52°F). With the rainy season in full effect, expect around 308 mm (12 in) of rainfall and regular showers throughout the month.

Rainfall in San Antonio in May

San Antonio is in the rainy season in May, with rain on around 15 days and an average of 308 mm (12 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.

Temperature in San Antonio in May

Expect highs of 19°C (66°F) in San Antonio in May, with nights dropping to around 11°C (52°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in San Antonio in May

The area experiences a moderate amount of sunshine, with approximately 165 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.

Wind Speed in San Antonio in May

Average wind conditions reach () in May. This results in mostly calm, still weather and is ideal for most activities. While this is an average, conditions can vary slightly from completely calm to occasionally breezy days.

If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit San Antonio. Our weather planner can help you explore destinations with more pleasant weather conditions.