When to go · San Juan

San Juan in September

Great month. Inside San Juan's best window: Mar–May, Sep–Nov.

Key facts

Verdict: Great
Temperature: 24°C (75°F)75°F (24°C) / 7°C (45°F)45°F (7°C); average high / low
Rain days: 1
Crowds: Low; Argentina overall
Prices: Medium; Argentina overall

Plan around it

Verdict

GreatBest and avoid months for San Juan

Inside San Juan's best window: Mar–May, Sep–Nov.

No other month rates higher than September for San Juan in this guide.

Long-term averages

San JuanHighs around 24 °C (75 °F), lows around 7 °C (45 °F), rain on about 1 dayHighs around 75 °F (24 °C), lows around 45 °F (7 °C), rain on about 1 day
Cuyo (Mendoza and the high Andes), Argentina · Mendoza, San Juan, Aconcaguafine
Dry and sunny; harvest (vendimia) in March; the pass to Chile can close with snow in June–September.

Argentina overall: Spring: whales at Valdés, Iguazú and the Northwest at their best, jacaranda starting in Buenos Aires.

Weather, crowds and prices for any two months in San Juan, side by side.

First month

Second month

September: Inside San Juan's best window: Mar–May, Sep–Nov.

March: Inside San Juan's best window: Mar–May, Sep–Nov.

San Juan: figures are long-term averages from this guide, not a forecast.