When to go · San Antonio
San Antonio in September
Good month. Outside the best window (Mar–Apr, Oct–Nov). Across United States: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.
Key facts
- Verdict
- Good
- Temperature
- 32°C (90°F)90°F (32°C) / 21°C (70°F)70°F (21°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: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.
Is another month better than September?
September is rated good. These months rate higher:
Weather in September
- San AntonioHighs around 32 °C (90 °F), lows around 21 °C (70 °F), rain on about 7 daysHighs around 90 °F (32 °C), lows around 70 °F (21 °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.
Labor Day big impact
1st Monday of September · United States
End of summer; last big road-trip weekend.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.
Compare two months
Weather, crowds and prices for any two months in San Antonio, side by side.
Verdict
Sep: Good
Mar: Great (better)
Daytime high
Sep: 32 °C (90 °F)90 °F (32 °C)
Mar: 23 °C (73 °F)73 °F (23 °C)
Night low
Sep: 21 °C (70 °F)70 °F (21 °C)
Mar: 11 °C (52 °F)52 °F (11 °C)
Rain days
Sep: 7
Mar: 7
Crowds
Sep: Medium
Mar: Medium
Prices
Sep: Medium
Mar: Medium
Festivals listed
Sep: 1
Mar: 2
September: Outside the best window (Mar–Apr, Oct–Nov). Across United States: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.
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