Verdict: Good month
Johannesburg Weather in December
December hits the sweet spot in Johannesburg — highs around 25°C (77°F), ideal for a full day on foot. It's also the wet side of the calendar: rain falls on about 18 days, so build flexibility into plans. Overall, December is a solid month to visit Johannesburg.
Average high
25°C / 77°F
Average low
15°C / 59°F
Rain days
~18
Precipitation
127 mm
What to pack for Johannesburg in December
- Summer clothes, plus one light layer for air-con and evenings
- Rain gear is non-negotiable — expect rain on roughly 18 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Johannesburg: Oct (26°C / 79°F) · Coolest: Jun (17°C / 63°F) · Wettest: Dec (~18 rain days)
25°
14°
Jan
25°
14°
Feb
24°
13°
Mar
21°
10°
Apr
20°
7°
May
17°
4°
Jun
17°
4°
Jul
20°
6°
Aug
25°
10°
Sep
26°
12°
Oct
25°
14°
Nov
25°
15°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)