Johannesburg · May
Run in the morning.
Cool month: average high 67°F, low 45°F. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
67° / 45°F
Humidity
55%
Rain days
4/mo
Wind
10 mph
What May feels like in Johannesburg
Sunrise
06:39
Mid-month average
Sunset
17:29
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 May
The kit for May in Johannesburg: a long-sleeve or light jacket for the first mile.
May vs the surrounding months
vs April
-3° avg high
-7 rain days
Johannesburg in April →
May
67°F avg high
4 rain days
Best: morning
vs June
+4° avg high
+2 rain days
Johannesburg in June →
Frequently Asked Questions
What is the best time of day to run in Johannesburg in May?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in Johannesburg in May?+
Average high 67°F, average low 45°F.
How does May compare to surrounding months in Johannesburg?+
Compared to April (avg high 71°F), May is cooler. Compared to June (avg high 63°F), May is warmer.
Does it rain often in Johannesburg in May?+
Expect about 4 measurable rain days in May, on average.