When to go · San Juan
San Juan in August
Mixed month. Outside the best window (Mar–May, Sep–Nov). Across Argentina: Late winter: Northwest dry and clear; Iguazú pleasant; Patagonia still closed for hiking.
Key facts
- Verdict
- Mixed
- Temperature
- 20°C (68°F)68°F (20°C) / 3°C (37°F)37°F (3°C)
- average high / low
- Rain days
- 1
- Crowds
- Low
- Argentina overall
- Prices
- Low
- Argentina overall
Verdict
Outside the best window (Mar–May, Sep–Nov). Across Argentina: Late winter: Northwest dry and clear; Iguazú pleasant; Patagonia still closed for hiking.
Is another month better than August?
August is rated mixed. These months rate higher:
Weather in August
- San JuanHighs around 20 °C (68 °F), lows around 3 °C (37 °F), rain on about 1 dayHighs around 68 °F (20 °C), lows around 37 °F (3 °C), rain on about 1 day
- Cuyo (Mendoza and the high Andes), Argentina · Mendoza, San Juan, Aconcaguacool
Dry and sunny; harvest (vendimia) in March; the pass to Chile can close with snow in June–September.
Crowds and prices
- Crowds · Argentina overall
- Low
- Prices · Argentina overall
- Low
Argentina overall: Late winter: Northwest dry and clear; Iguazú pleasant; Patagonia still closed for hiking.
Compare two months
Weather, crowds and prices for any two months in San Juan, side by side.
Verdict
Aug: Mixed
Mar: Great (better)
Daytime high
Aug: 20 °C (68 °F)68 °F (20 °C)
Mar: 31 °C (88 °F)88 °F (31 °C)
Night low
Aug: 3 °C (37 °F)37 °F (3 °C)
Mar: 16 °C (61 °F)61 °F (16 °C)
Rain days
Aug: 1 (better)
Mar: 3
Crowds
Aug: Low
Mar: Medium
Prices
Aug: Low
Mar: Medium
Festivals listed
Aug: 0
Mar: 1
August: Outside the best window (Mar–May, Sep–Nov). Across Argentina: Late winter: Northwest dry and clear; Iguazú pleasant; Patagonia still closed for hiking.
March: 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
- A warm coat, hat and gloves for mornings and evenings
- Layers: a fleece or light jacket