When to go · San Antonio
San Antonio in May
Good month. Outside the best window (Mar–Apr, Oct–Nov). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Key facts
- Verdict
- Good
- Temperature
- 30°C (86°F)86°F (30°C) / 19°C (66°F)66°F (19°C)
- average high / low
- Rain days
- 7
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Outside the best window (Mar–Apr, Oct–Nov). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Is another month better than May?
May is rated good. These months rate higher:
Weather in May
- San AntonioHighs around 30 °C (86 °F), lows around 19 °C (66 °F), rain on about 7 daysHighs around 86 °F (30 °C), lows around 66 °F (19 °C), rain on about 7 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Memorial Day big impact
Last Monday of May · United States
Start of summer; roads and beaches full.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Compare two months
Weather, crowds and prices for any two months in San Antonio, side by side.
Verdict
May: Good
Mar: Great (better)
Daytime high
May: 30 °C (86 °F)86 °F (30 °C)
Mar: 23 °C (73 °F)73 °F (23 °C)
Night low
May: 19 °C (66 °F)66 °F (19 °C)
Mar: 11 °C (52 °F)52 °F (11 °C)
Rain days
May: 7
Mar: 7
Crowds
May: Medium
Mar: Medium
Prices
May: Medium
Mar: Medium
Festivals listed
May: 1
Mar: 2
May: Outside the best window (Mar–Apr, Oct–Nov). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
March: Inside San Antonio's best window: Mar–Apr, Oct–Nov.
San Antonio: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen