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Weather in South Africa in December – is it worth traveling to?

Going to South Africa in December? Historical weather data will show you the chances of sun and heat or snow and wind.
Check flight prices to South Africa on Avionero:
December

Is the weather good in South Africa in December 2024?

Great Weather
Mild
🌧️
Rainy

For the past few decades, the average daily temperatures in South Africa during December have been around +75°F.

In South Africa the temperature rarely varies more than seven degrees between the different parts with the highest temperature +75°F in Johannesburg to +72°F in Cape Town. So you should be able to pack for similar conditions wherever you go in the country.

Temperature, wind and humidity in December

Average
Cape Town
Durban
Johannesburg
☀️
+75°F
Avg. max. temperature
+41°F
Min.
+99°F
Max.
88 mm
Total precipitation
74%
Avg. humidity
3 m/s
Avg. wind
7 ☀️
Sunny Days
7 ⛅️
Cloudy
16 🌦
Rainy
Our opinion: South Africa has great weather in December.
South Africa in December – what city is the…
  • rainiest? Johannesburg, with an average of 5 mm of rain and humidity of 70%;
  • warmest? Johannesburg, with daytime temperatures averaging +77°F;
  • windiest? Cape Town, with an average of 6 m/s;
  • coolest? Cape Town, with daytime temperatures averaging +72°F;

How good is the weather in South Africa in December?

During December, the South Africa usually offers good weather overall, with air pressure around 1017 HPa. This means you may encounter some rainy weather too – December brings around 62 mm of rain and winds averaging 3 m/s. Humidity ranges between 70% in Johannesburg and 81% in Durban. In general, it tends to be more humid near the sea and lake and drier inland.

How warm is it in South Africa during December?

The weather is usually pretty good this time of year, with daytime temperatures around +75°F.

This is how hot it usually is in December

The average daily temperatures above don't tell you everything about how hot it can be in South Africa. For example, cold nights can make a big difference for those staying in tents or unheated houses. Extra hot days, on the other hand, can make a big difference for those who plan to engage in demanding physical training or competition. So here are some more temperatures for December:
Average
Cape Town
Durban
Johannesburg
  • Average maximum temperature for the month: +75°F;
  • Average minimum temperature for the month: +63°F;
  • Highest monthly temperature: +77°F;
  • Lowest monthly temperature: +61°F;

Monthly temperatures:

Average
Cape Town
Durban
Johannesburg
  • Warmest: January with an average +77°F during the day;
  • Coldest: July with an average +64°F of the day;
  • Hottest month in hottest city: February in Durban;
  • Coldest month in coolest city: June in Cape Town;

Winds in South Africa during December

Wind speed in South Africa in December based on historical data:
Average
Cape Town
Durban
Johannesburg

December tends to offer light winds averaging 3 m/s. However, coastal cities may experience breezes during the mornings and afternoons.

Comparison between cities in December:

  • Highest average wind speed: Cape Town with 5 m/s;
  • Lowest average wind speed: Johannesburg with 1 m/s;
  • Windiest day of the month: Cape Town with 6 m/s;
  • The least windy day of the month: Johannesburg with 1 m/s;

Humidity and precipitation in South Africa in December

Amount of rainfall in mm during December in South Africa based on historical data:
Average
Cape Town
Durban
Johannesburg
December tends to be an extremely humid month with 72% humidity and 62 mm rainfall. In general the humidity tends to be a little lower in mountainous regions and more humid closer to water.

Comparison between cities in December:

Average
Cape Town
Durban
Johannesburg
  • Highest average rainfall: Johannesburg with 148 mm;
  • Lowest average rainfall: Cape Town with 15 mm;
  • Most number of rainy days: Johannesburg with 24 rainy days;
  • Least number of rainy days: Cape Town with 6 rainy days;
  • Highest risk of rain during the day: Johannesburg with 77%;
  • Least risk of rain during the day: Cape Town with 19%;
  • Highest average humidity: Durban with 81%;
  • Lowest average humidity: Johannesburg with 70%;

Tips for traveling to South Africa in December

Looking for some tips for traveling to the sun, snow, or whatever you're aiming for South Africa? Activities, weather, and clothing are closely linked. In addition, it's important to pack only what you really need so you don't have to worry about heavy packing or paying extra baggage fees.

Here is some advice on what to pack and what kind of activities you can do in the South Africa based on the weather that December is expected to bring. The advice applies to the country as a whole – local weather and possible activities may differ somewhat.

rainy, mild weather with light winds and very high humidity in December
Avionero

Pack right for December

The weather makes a difference when it comes to packing - especially which items should go in your suitcase. The tips below are designed to help you pack light and right without carrying more than necessary.
  • For light showers, an umbrella or a thin and light rain cape is usually sufficient, while more rain may require rainwear and rain boots.
  • Cool weather is between warm and cold. This means you can bring long pants and/or a longer skirt and an extra sweater. Be aware that cool days can alternate with cold nights - it may be wise to also pack a hat, gloves and a scarf.
  • Light winds are probably most comfortable in hot weather but is cooling in cool and cold weather. If it is hot (when the air temperature is about 30 degrees), the wind can have a warming effect. A thin, windproof jacket and long trousers help to counteract these effects.
  • High humidity means that the air conducts heat to and from the skin more easily. For example, if the air is hot (above skin temperature), it will be harder to stay cool. On the other hand, if the air is cool or cold, it is more difficult to stay warm. In high humidity, the choice of clothing makes less of a difference. However, your physical activity plays a bigger role.

FAQ

Frequently asked questions about the weather in South Africa in December:

What can you do outside when it's warm in South Africa?

Bathing and sunbathing can be suitable. Warm (but not hot) days are also good for activities that are not so physically demanding: sightseeing on foot, by boat, on a scooter, camel riding. You can also exercise easily as long as you make sure to cool down and quench thirst.

Is December a good time to visit South Africa?

Yes, December is a great time to go to South Africa, the weather couldn’t be better, so be ready to be outside to explore and enjoy. Check other months when is a good time to visit South Africa.

Monthly weather in South Africa

Source of the data

For this page, we’ve looked at the typical weather in South Africa, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.