Normal weather for Johannesburg in December
It's warm in December in Johannesburg with an average temperature of 27°C. Temperatures this month range from a low of 25°C to a high of 29°C. At night, you can expect temperatures between 15°C and 18°C.
In December, there is an average of 140 mm of precipitation, spread over 17 days. The wind speed is around 4 Bft, mostly coming from the South.
Johannesburg in December |
New York | ||
|---|---|---|---|
 Average Temperature |
27°C | 9°C | |
 High Temp |
29°C | 12°C | |
| Low Temp |
25°C | 4°C | |
 Total Precipitation |
140 mm | 133 mm | |
| Rainy Days |
17 days | 17 days | |
Start of December
The month of December starts in Johannesburg with hot temps, averaging around 28°C during the day and nights around 16°C. There are plenty of days with a good chance of precipitation.
With the temperature difference between day and night, it’s smart to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
Mid December
By mid-December, daytime temps stay steady at around 28°C, with nights around 17°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
End of December
By the end of December, the average daytime temperature in Johannesburg is around 28°C, while nighttime temps are about 17°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Because temperatures drop in the evening, wearing layers is recommended. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
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UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is December a good time to visit Johannesburg?
Looking for sun? December isn’t a good month to be in Johannesburg. The temperature is nice, but there’s too much chance of rain.
Temperature records for Johannesburg in December
Check out the climate of Johannesburg for all months and discover the best travel time
Curious about the weather in other parts of South Africa? Check out the climate and weather for spots like Cape Town, Krugerpark, Stellenbosch, or explore other destinations in South Africa.
November
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Daily Temperature in December in Johannesburg
This chart shows the average daily high and low temperatures in December for Johannesburg, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in Johannesburg
The chart below shows the average daily precipitation in December for Johannesburg, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 17 days of precipitation in Johannesburg.
Daily UV Index in December in Johannesburg
This chart shows the average daily UV index in December in Johannesburg, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in December in Johannesburg Over the Years
This chart shows the average temperature in December in Johannesburg, measured in degrees Celsius, over the past few years.
Total Precipitation in December in Johannesburg Over the Years
This chart shows the average precipitation in December in Johannesburg, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in December for Johannesburg
Click on any day in December to get detailed info about the usual weather on that day in Johannesburg. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Johannesburg
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Average Weather in Johannesburg by Month
Click on a month below to see detailed weather info for Johannesburg. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Johannesburg for all months at once
