ClimateExplore the planning map
Climate · Johannesburg

Johannesburg in December

Warm and wet, as the days hold steady.

Typical weather, averaged over 30 years

December in Johannesburg is warm: highs near 79°F, lows near 57°F. Rain falls on about four days a week, more often as the month goes on, and daylight holds at about 13 hours 45 minutes.December in Johannesburg is warm: highs near 26°C, lows near 14°C. Rain falls on about four days a week, more often as the month goes on, and daylight holds at about 13 hours 45 minutes.

High
79°F26°Caverage
Low
57°F14°Caverage
Wet days
4a week · 62% of days
Daylight
13h 45mon average

Is December a good time to visit Johannesburg?

A good month, just outside Johannesburg's best months, which run in two parts: April, or August to October.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 79°F in December, against 64°F to 80°F through the year.Highs near 26°C in December, against 18°C to 27°C through the year.

Chance of a wet day

62% of days in December, against 3% to 62% through the year.

Cloud cover

44% cover in December, against 11% to 44% through the year.

Daylight

13h 45m in December, against 10h 31m to 13h 45m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. November79°26°low 54°low 12°3 wet days a weekRain on about three days a week.
  2. December79°26°low 57°low 14°4 wet days a weekRain on about four days a week.
  3. January79°26°low 58°low 14°4 wet days a weekRain on about four days a week.

Where Johannesburg sits, in December

Africa/Johannesburg
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
5:10 AMsets 6:56 PM
Above the sea
1,750 mhigh country
Latitude
26.2°Ssouthern hemisphere
Nearest of ours
Pretoria53 km north

The land around Johannesburg, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in South Africa in December

high · low · wet days
See December on the planning mapThe whole year in Johannesburg

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Johannesburg. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,750 m) against the climate model's (1,673 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,750 m) against the climate model's (1,673 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.