When to go · San Luis
San Luis in September
Great month. Inside San Luis's best window: Mar–May, Sep–Nov.
Key facts
- Verdict
- Great
- Temperature
- 22°C (72°F)72°F (22°C) / 8°C (46°F)46°F (8°C)
- average high / low
- Rain days
- 4
- Crowds
- Low
- Argentina overall
- Prices
- Medium
- Argentina overall
Verdict
Inside San Luis's best window: Mar–May, Sep–Nov.
Is another month better than September?
No other month rates higher than September for San Luis in this guide.
Weather in September
- San LuisHighs around 22 °C (72 °F), lows around 8 °C (46 °F), rain on about 4 daysHighs around 72 °F (22 °C), lows around 46 °F (8 °C), rain on about 4 days
Crowds and prices
- Crowds · Argentina overall
- Low
- Prices · Argentina overall
- Medium
Argentina overall: Spring: whales at Valdés, Iguazú and the Northwest at their best, jacaranda starting in Buenos Aires.
Compare two months
Weather, crowds and prices for any two months in San Luis, side by side.
Verdict
Sep: Great
Mar: Great
Daytime high
Sep: 22 °C (72 °F)72 °F (22 °C)
Mar: 27 °C (81 °F)81 °F (27 °C)
Night low
Sep: 8 °C (46 °F)46 °F (8 °C)
Mar: 15 °C (59 °F)59 °F (15 °C)
Rain days
Sep: 4 (better)
Mar: 7
Crowds
Sep: Low
Mar: Medium
Prices
Sep: Medium
Mar: Medium
Festivals listed
Sep: 0
Mar: 1
September: Inside San Luis's best window: Mar–May, Sep–Nov.
March: Inside San Luis's best window: Mar–May, Sep–Nov.
San Luis: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings