Miami · December
Run in the morning.
Comfortable average high of 77°F, dipping to 67°F at night. Humidity averages 75% — the limiting factor on most runs. Expect 17 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
77° / 67°F
Humidity
75%
Rain days
17/mo
Wind
13 mph
What December feels like in Miami
Sunrise
07:59
Mid-month average
Sunset
18:33
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 Miami in December
The kit for December in Miami: 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
Miami in November →
December
77°F avg high
17 rain days
Best: morning
vs January
+2° avg high
+2 rain days
Miami in January →
Frequently Asked Questions
What is the best time of day to run in Miami in December?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Miami in December?+
Average high 77°F, average low 67°F.
How does December compare to surrounding months in Miami?+
Compared to November (avg high 80°F), December is cooler. Compared to January (avg high 75°F), December is warmer.
Does it rain often in Miami in December?+
Expect about 17 measurable rain days in December, on average.