Weather · San Juan, Argentina
San Juan Weather in December
December in San Juan averages 34°C by day and 20°C at night, with about 5mm of rain. That makes it not the easiest month, weather-wise.
Avg high
34°C
93°F
Avg low
20°C
68°F
Rainfall
5mm
#6 wettest of 12
What to pack
Light, breathable clothes and strong sun protection. Rain is unlikely to interrupt your plans.
Timing a trip around the weather? A Local Friend in San Juan builds it around the season for you.