Johannesburg Weather in December
During December, Johannesburg experiences high daytime temperatures of 27°C (81°F) and cooler nights around 16°C (61°F). As the wettest month of the year, expect frequent rainfall.
Rainfall in Johannesburg in December
The month brings the most rain, so be prepared with an umbrella for the occasional shower. Typically, about 14 days will experience rainfall, with an average of 140 mm (5.5 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Johannesburg in December
In December, expect high temperatures in Johannesburg, with highs of 27°C (81°F) and lows of 16°C (61°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Johannesburg in December
The city usually sees around 264 hours of sunlight, indicating many sunny days — a great month for sightseeing.December in Johannesburg has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Africa, check out our Johannesburg's climate page.
Johannesburg Temperature in December
Min Temperature
16°C (61°F)
Max Temperature
27°C (81°F)
Chance of Rain
46%
Precipitation
140 mm (5.5 in)
Rainy days
14 days
Humidity
66%
Sunshine
264 hours
Percentage Sunshine
61%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Johannesburg typically stay consistent throughout December, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows around 15°C (59°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Johannesburg in December
Browse day-by-day weather records for Johannesburg spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Johannesburg historical weather extremes in December
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Johannesburg.
- The hottest December day on record in Johannesburg reached 35°C (95°F) (December 6, 2015).
- Johannesburg experienced its chilliest December day on December 5, 2019, reaching only 13°C (55°F).
- Nighttime temperatures dropped to 2°C (36°F) on December 28, 2021, marking the coldest December night on record.
Best Places in South Africa in December
Find out more about the weather in South Africa and which places have the best travel conditions in this month. See all of South Africa in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Johannesburg in December
Warm but pleasant conditions in Johannesburg in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Johannesburg in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Africa, check out our Johannesburg's climate page.
Temperature Rainfall Sunshine Humidity
See the full Johannesburg climate overview or explore weather in South Africa.
