When to go · San Luis
San Luis, month by month
The best months for San Luis: Mar, Apr, May, Sep, Oct, Nov. Months to avoid: Jan, Feb.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Feb (hot, and provincial holiday crowds at the reservoirs).31 °C (88 °F) / 18 °C (64 °F), 8 rain days88 °F (31 °C) / 64 °F (18 °C), 8 rain daysCrowds: High
- FebruaryAvoidListed as a month to avoid: Jan–Feb (hot, and provincial holiday crowds at the reservoirs).30 °C (86 °F) / 17 °C (63 °F), 7 rain days86 °F (30 °C) / 63 °F (17 °C), 7 rain daysCrowds: High · 1 festival or holiday
- MarchGreatInside San Luis's best window: Mar–May, Sep–Nov.27 °C (81 °F) / 15 °C (59 °F), 7 rain days81 °F (27 °C) / 59 °F (15 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- AprilGreatInside San Luis's best window: Mar–May, Sep–Nov.23 °C (73 °F) / 11 °C (52 °F), 5 rain days73 °F (23 °C) / 52 °F (11 °C), 5 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside San Luis's best window: Mar–May, Sep–Nov.19 °C (66 °F) / 7 °C (45 °F), 4 rain days66 °F (19 °C) / 45 °F (7 °C), 4 rain daysCrowds: Low
- JuneMixedOutside the best window (Mar–May, Sep–Nov). Across Argentina: Winter: El Chaltén mostly shut; good for Iguazú, Salta and whale watching at Península Valdés.16 °C (61 °F) / 4 °C (39 °F), 3 rain days61 °F (16 °C) / 39 °F (4 °C), 3 rain daysCrowds: Low
- JulyMixedOutside the best window (Mar–May, Sep–Nov). Across Argentina: Winter school holidays: ski season in Bariloche; cold and grey in Buenos Aires.16 °C (61 °F) / 3 °C (37 °F), 3 rain days61 °F (16 °C) / 37 °F (3 °C), 3 rain daysCrowds: Medium · 1 festival or holiday
- AugustMixedOutside the best window (Mar–May, Sep–Nov). Across Argentina: Late winter: Northwest dry and clear; Iguazú pleasant; Patagonia still closed for hiking.19 °C (66 °F) / 5 °C (41 °F), 3 rain days66 °F (19 °C) / 41 °F (5 °C), 3 rain daysCrowds: Low
- SeptemberGreatInside San Luis's best window: Mar–May, Sep–Nov.22 °C (72 °F) / 8 °C (46 °F), 4 rain days72 °F (22 °C) / 46 °F (8 °C), 4 rain daysCrowds: Low
- OctoberGreatInside San Luis's best window: Mar–May, Sep–Nov.26 °C (79 °F) / 12 °C (54 °F), 6 rain days79 °F (26 °C) / 54 °F (12 °C), 6 rain daysCrowds: Medium
- NovemberGreatInside San Luis's best window: Mar–May, Sep–Nov.29 °C (84 °F) / 15 °C (59 °F), 7 rain days84 °F (29 °C) / 59 °F (15 °C), 7 rain daysCrowds: Medium
- DecemberGoodOutside the best window (Mar–May, Sep–Nov). Across Argentina: Patagonia summer starts; book flights early; Christmas and New Year fill everything.31 °C (88 °F) / 17 °C (63 °F), 8 rain days88 °F (31 °C) / 63 °F (17 °C), 8 rain daysCrowds: High
Compare two months
Weather, crowds and prices for any two months in San Luis, side by side.
Verdict
Mar: Great
Apr: Great
Daytime high
Mar: 27 °C (81 °F)81 °F (27 °C)
Apr: 23 °C (73 °F)73 °F (23 °C)
Night low
Mar: 15 °C (59 °F)59 °F (15 °C)
Apr: 11 °C (52 °F)52 °F (11 °C)
Rain days
Mar: 7
Apr: 5 (better)
Crowds
Mar: Medium
Apr: Medium
Prices
Mar: Medium
Apr: Medium
Festivals listed
Mar: 1
Apr: 1
March: Inside San Luis's best window: Mar–May, Sep–Nov.
April: Inside San Luis's best window: Mar–May, Sep–Nov.
San Luis: figures are long-term averages from this guide, not a forecast.