When to go · San Marcos
San Marcos in December
Avoid month. Listed as a month to avoid: Jul–Aug (38°C (100°F)+ and crowded river), plus graduation weekends in May and December.Avoid month. Listed as a month to avoid: Jul–Aug (100°F (38°C)+ and crowded river), plus graduation weekends in May and December.
Key facts
- Verdict
- Avoid
- Temperature
- 18°C (64°F)64°F (18°C) / 5°C (41°F)41°F (5°C)
- average high / low
- Rain days
- 7
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Listed as a month to avoid: Jul–Aug (38°C (100°F)+ and crowded river), plus graduation weekends in May and December.Listed as a month to avoid: Jul–Aug (100°F (38°C)+ and crowded river), plus graduation weekends in May and December.
Is another month better than December?
December is rated avoid. These months rate higher:
Weather in December
- San MarcosHighs around 18 °C (64 °F), lows around 5 °C (41 °F), rain on about 7 daysHighs around 64 °F (18 °C), lows around 41 °F (5 °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.
Christmas Day big impact
25 Dec · United States
Most businesses closed; flights full from about 20 Dec to 2 Jan.
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in San Marcos, side by side.
Verdict
Dec: Avoid
Mar: Great (better)
Daytime high
Dec: 18 °C (64 °F)64 °F (18 °C)
Mar: 23 °C (73 °F)73 °F (23 °C)
Night low
Dec: 5 °C (41 °F)41 °F (5 °C)
Mar: 11 °C (52 °F)52 °F (11 °C)
Rain days
Dec: 7
Mar: 7
Crowds
Dec: High
Mar: Medium
Prices
Dec: High
Mar: Medium
Festivals listed
Dec: 1
Mar: 2
December: Listed as a month to avoid: Jul–Aug (38°C+ and crowded river), plus graduation weekends in May and December.
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
- A warm coat, hat and gloves for mornings and evenings