Santiago · December
Run in the morning.
Comfortable average high of 83°F, dipping to 57°F at night. Dry month — only 1 measurable rain days on average. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
Avg high / low
83° / 57°F
Humidity
51%
Rain days
1/mo
Wind
11 mph
What December feels like in Santiago
Sunrise
05:28
Mid-month average
Sunset
19:48
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 Santiago in December
The kit for December in Santiago: shorts and a short-sleeve are the standard kit.
December vs the surrounding months
vs November
+5° avg high
-4 rain days
Santiago in November →
December
83°F avg high
1 rain days
Best: morning
vs January
-2° avg high
0 rain days
Santiago in January →
Frequently Asked Questions
What is the best time of day to run in Santiago 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 Santiago in December?+
Average high 83°F, average low 57°F.
How does December compare to surrounding months in Santiago?+
Compared to November (avg high 78°F), December is warmer. Compared to January (avg high 85°F), December is cooler.
Does it rain often in Santiago in December?+
Expect about 1 measurable rain days in December, on average.