When to go · San Juan
San Juan in December
Avoid month. Listed as a month to avoid: Dec–Feb (35–40 °C days), and the summer holiday weeks.Avoid month. Listed as a month to avoid: Dec–Feb (95–104 °F days), and the summer holiday weeks.
Key facts
- Verdict
- Avoid
- Temperature
- 34°C93°F / 18°C64°F
- average high / low
- Rain days
- 3
- Crowds
- High
- Argentina overall
- Prices
- High
- Argentina overall
Verdict
AvoidBest and avoid months for San Juan
Listed as a month to avoid: Dec–Feb (35–40 °C days), and the summer holiday weeks.Listed as a month to avoid: Dec–Feb (95–104 °F days), and the summer holiday weeks.
Weather in December
- San JuanHighs around 34 °C, lows around 18 °C, rain on about 3 daysHighs around 93 °F, lows around 64 °F, rain on about 3 days
- 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.
Crowds and prices
- Crowds · Argentina overall
- High
- Prices · Argentina overall
- High
Argentina overall: Patagonia summer starts; book flights early; Christmas and New Year fill everything.
High-price month: see what to book ahead.
What to pack
- Light, breathable clothes, a sun hat and sunscreen