When to go · San Marcos
San Marcos in September
Great month. Inside San Marcos's best window: Mar–May, Sep–Nov.
Key facts
- Verdict
- Great
- Temperature
- 33°C (91°F)91°F (33°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
Inside San Marcos's best window: Mar–May, Sep–Nov.
Is another month better than September?
No other month rates higher than September for San Marcos in this guide.
Weather in September
- San MarcosHighs around 33 °C (91 °F), lows around 21 °C (70 °F), rain on about 7 daysHighs around 91 °F (33 °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 Marcos, side by side.
Verdict
Sep: Great
Mar: Great
Daytime high
Sep: 33 °C (91 °F)91 °F (33 °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: Inside San Marcos's best window: Mar–May, Sep–Nov.
March: Inside San Marcos's best window: Mar–May, Sep–Nov.
San Marcos: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen