São Paulo · December
Run in the morning.
Comfortable average high of 80°F, dipping to 64°F at night. Humidity averages 82% — the limiting factor on most runs. Expect 24 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
80° / 64°F
Humidity
82%
Rain days
24/mo
Wind
12 mph
What December feels like in São Paulo
Sunrise
05:15
Mid-month average
Sunset
18:48
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
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 São Paulo in December
The kit for December in São Paulo: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
December vs the surrounding months
vs November
+3° avg high
+3 rain days
São Paulo in November →
December
80°F avg high
24 rain days
Best: morning
vs January
-1° avg high
-3 rain days
São Paulo in January →
Frequently Asked Questions
What is the best time of day to run in São Paulo in December?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in São Paulo in December?+
Average high 80°F, average low 64°F.
How does December compare to surrounding months in São Paulo?+
Compared to November (avg high 77°F), December is warmer. Compared to January (avg high 81°F), December is cooler.
Does it rain often in São Paulo in December?+
Expect about 24 measurable rain days in December, on average.