Johannesburg · December
Run in the morning.
Comfortable average high of 78°F, dipping to 58°F at night. Expect 21 rain days — plan around the radar. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
Avg high / low
78° / 58°F
Humidity
66%
Rain days
21/mo
Wind
12 mph
What December feels like in Johannesburg
Sunrise
05:11
Mid-month average
Sunset
18:55
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 Johannesburg in December
The kit for December in Johannesburg: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
December vs the surrounding months
vs November
0° avg high
+5 rain days
Johannesburg in November →
December
78°F avg high
21 rain days
Best: morning
vs January
0° avg high
+2 rain days
Johannesburg in January →
Frequently Asked Questions
What is the best time of day to run in Johannesburg 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 Johannesburg in December?+
Average high 78°F, average low 58°F.
How does December compare to surrounding months in Johannesburg?+
Compared to November (avg high 78°F), December is cooler. Compared to January (avg high 78°F), December is cooler.
Does it rain often in Johannesburg in December?+
Expect about 21 measurable rain days in December, on average.