When to go · San Marcos
San Marcos, month by month
The best months for San Marcos: Mar, Apr, May, Sep, Oct, Nov. Months to avoid: Jul, Aug, Dec.
Month by month
- JanuaryMixedOutside the best window (Mar–May, Sep–Nov). Across United States: Cold and snowy north and in the mountains; Florida, Hawaii and the desert Southwest are the picks.17 °C / 5 °C, 7 rain days63 °F / 41 °F, 7 rain daysCrowds: Low
- FebruaryMixedOutside the best window (Mar–May, Sep–Nov). Across United States: Still winter north; ski season in the Rockies; Presidents' Day weekend busy. Mardi Gras in New Orleans (date varies).19 °C / 7 °C, 7 rain days66 °F / 45 °F, 7 rain daysCrowds: Low · 1 festival or holiday
- MarchGreatInside San Marcos's best window: Mar–May, Sep–Nov.23 °C / 11 °C, 7 rain days73 °F / 52 °F, 7 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGreatInside San Marcos's best window: Mar–May, Sep–Nov.27 °C / 15 °C, 6 rain days81 °F / 59 °F, 6 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside San Marcos's best window: Mar–May, Sep–Nov.30 °C / 19 °C, 8 rain days86 °F / 66 °F, 8 rain daysCrowds: Medium · 1 festival or holiday
- JuneGoodOutside the best window (Mar–May, Sep–Nov). Across United States: Rockies and northern parks open; desert heat builds; hurricane season starts. Book parks months ahead.33 °C / 22 °C, 6 rain days91 °F / 72 °F, 6 rain daysCrowds: High
- JulyAvoidListed as a month to avoid: Jul–Aug (38°C+ and crowded river), plus graduation weekends in May and December.Listed as a month to avoid: Jul–Aug (100°F+ and crowded river), plus graduation weekends in May and December.35 °C / 23 °C, 5 rain days95 °F / 73 °F, 5 rain daysCrowds: High · 1 festival or holiday
- AugustAvoidListed as a month to avoid: Jul–Aug (38°C+ and crowded river), plus graduation weekends in May and December.Listed as a month to avoid: Jul–Aug (100°F+ and crowded river), plus graduation weekends in May and December.36 °C / 23 °C, 5 rain days97 °F / 73 °F, 5 rain daysCrowds: High
- SeptemberGreatInside San Marcos's best window: Mar–May, Sep–Nov.33 °C / 21 °C, 7 rain days91 °F / 70 °F, 7 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside San Marcos's best window: Mar–May, Sep–Nov.28 °C / 15 °C, 6 rain days82 °F / 59 °F, 6 rain daysCrowds: Medium
- NovemberGreatInside San Marcos's best window: Mar–May, Sep–Nov.22 °C / 9 °C, 6 rain days72 °F / 48 °F, 6 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Jul–Aug (38°C+ and crowded river), plus graduation weekends in May and December.Listed as a month to avoid: Jul–Aug (100°F+ and crowded river), plus graduation weekends in May and December.18 °C / 5 °C, 7 rain days64 °F / 41 °F, 7 rain daysCrowds: High · 1 festival or holiday