Buenos Aires · December
Run in the morning.
Comfortable average high of 81°F, dipping to 66°F at night. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
Avg high / low
81° / 66°F
Humidity
65%
Rain days
11/mo
Wind
15 mph
What December feels like in Buenos Aires
Sunrise
05:36
Mid-month average
Sunset
20:02
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Buenos Aires in December
The kit for December in Buenos Aires: shorts and a short-sleeve are the standard kit, a wind-blocking layer for exposed routes.
December vs the surrounding months
vs November
+5° avg high
+1 rain days
Buenos Aires in November →
December
81°F avg high
11 rain days
Best: morning
vs January
-2° avg high
0 rain days
Buenos Aires in January →
Frequently Asked Questions
What is the best time of day to run in Buenos Aires in December?+
Morning. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
What's the average temperature in Buenos Aires in December?+
Average high 81°F, average low 66°F.
How does December compare to surrounding months in Buenos Aires?+
Compared to November (avg high 76°F), December is warmer. Compared to January (avg high 83°F), December is cooler.
Does it rain often in Buenos Aires in December?+
Expect about 11 measurable rain days in December, on average.