When to go · San Juan
San Juan in March
Great month. Inside San Juan's best window: Mar–May, Sep–Nov.
Key facts
- Verdict
- Great
- Temperature
- 31°C (88°F)88°F (31°C) / 16°C (61°F)61°F (16°C)
- average high / low
- Rain days
- 3
- Crowds
- Medium
- Argentina overall
- Prices
- Medium
- Argentina overall
Verdict
Inside San Juan's best window: Mar–May, Sep–Nov.
Is another month better than March?
No other month rates higher than March for San Juan in this guide.
Weather in March
- San JuanHighs around 31 °C (88 °F), lows around 16 °C (61 °F), rain on about 3 daysHighs around 88 °F (31 °C), lows around 61 °F (16 °C), rain on about 3 days
- Cuyo (Mendoza and the high Andes), Argentina · Mendoza, San Juan, Aconcaguabest weather
Dry and sunny; harvest (vendimia) in March; the pass to Chile can close with snow in June–September.
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.
Semana Santa big impact
Easter (Thu–Fri; 25–26 Mar 2027) · Argentina
Domestic travel peak; buses and flights full.
Crowds and prices
- Crowds · Argentina overall
- Medium
- Prices · Argentina overall
- Medium
Argentina overall: Good all round: Mendoza harvest festival, Patagonia calmer, Buenos Aires cooling down.
Compare two months
Weather, crowds and prices for any two months in San Juan, side by side.
Verdict
Mar: Great
Apr: Great
Daytime high
Mar: 31 °C (88 °F)88 °F (31 °C)
Apr: 25 °C (77 °F)77 °F (25 °C)
Night low
Mar: 16 °C (61 °F)61 °F (16 °C)
Apr: 11 °C (52 °F)52 °F (11 °C)
Rain days
Mar: 3
Apr: 2 (better)
Crowds
Mar: Medium
Apr: Medium
Prices
Mar: Medium
Apr: Medium
Festivals listed
Mar: 1
Apr: 1
March: Inside San Juan's best window: Mar–May, Sep–Nov.
April: Inside San Juan's best window: Mar–May, Sep–Nov.
San Juan: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen