When to go · San Juan, Argentina
Best Time to Visit San Juan
The sweet spot for San Juan is May, August and April. Here's every month's temperature and rain so you can plan around your own dates.
Go now
May, August, April
Comfortable and drier
Shoulder
September, October, July
Fewer crowds, a trade-off
Think twice
January, December
Hottest is December (34°C)
San Juan weather, month by month
| Month | High | Low | Rain | Feel |
|---|---|---|---|---|
| Jan | 34°C / 93°F | 21°C / 70°F | 24mm | very hot, mostly dry |
| Feb | 32°C / 90°F | 19°C / 66°F | 16mm | hot, mostly dry |
| Mar | 29°C / 84°F | 17°C / 63°F | 14mm | hot, mostly dry |
| AprBEST | 26°C / 79°F | 13°C / 55°F | 3mm | warm, mostly dry |
| MayBEST | 20°C / 68°F | 8°C / 46°F | 1mm | mild, mostly dry |
| Jun | 16°C / 61°F | 4°C / 39°F | 2mm | cool, mostly dry |
| Jul | 16°C / 61°F | 3°C / 37°F | 1mm | cool, mostly dry |
| AugBEST | 20°C / 68°F | 5°C / 41°F | 1mm | mild, mostly dry |
| Sep | 23°C / 73°F | 8°C / 46°F | 4mm | warm, mostly dry |
| Oct | 27°C / 81°F | 12°C / 54°F | 6mm | warm, mostly dry |
| Nov | 32°C / 90°F | 17°C / 63°F | 7mm | hot, mostly dry |
| Dec | 34°C / 93°F | 20°C / 68°F | 5mm | very hot, mostly dry |
Averages from Open-Meteo ERA5 climate reanalysis, 2019 to 2023. Highs and lows are daily averages for each month; rain is the monthly total. Tap a month for a detailed guide.
Want the timing decided for you? A Local Friend in San Juan plans around the seasons for you.