December weather forecast
Sun City, South Africa

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The Palace in Lost City, Sun City, South Africa, with a large water fountain in the front yard
The Palace in Lost City, Sun City, South Africa, with a large water fountain in the front yard

Weather in December

The culmination of the year sees Sun City in full swing of its summer season in December. Climbing temperatures, high humidity, and heavy rainfall make for a tropical atmosphere. Despite the rain, daylight and sunshine hours peak, marking the longest day of the year during the December solstice. The summer heat is moderated by comforting breezes that bring a refreshing respite. The vibrant summer weather of December in Sun City celebrates the year-end with splendid fervor and warmth.

Temperature

December's advent denotes a minor fluctuation in the average high-temperature to a still moderately hot 29.1°C (84.4°F) from November's 28.7°C (83.7°F). Throughout the month of December, the average temperature in Sun City dips to a refreshing 18°C (64.4°F) at night.

Heat index

For December, the heat index is calculated to be a tropical 31°C (87.8°F). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.

Humidity

In December, the average relative humidity in Sun City is 57%.

Rainfall

December is the month with the most rainfall. Rain falls for 19.6 days and accumulates 95mm (3.74") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 42min of daylight.
On the first day of December, sunrise is at 05:12 and sunset at 18:48. On the last day of the month, sunrise is at 05:24 and sunset at 19:05 SAST.

Sunshine

In December, the average sunshine is 11.3h.

UV index

The months with the highest UV index in Sun City are January through March, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 during December translates into the following directions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

How hot does it get in Sun City in December?

The average high-temperature and low-temperature during December are 29.1°C (84.4°F) and 18°C (64.4°F) respectively. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in December is calculated to be 31°C (87.8°F).

What is the average humidity in December in Sun City?

In December, the average relative humidity in Sun City, South Africa, is 57%.

What is the wettest month in Sun City?

The month with the most rainfall in Sun City, South Africa, is December, when the rain falls for 19.6 days and typically aggregates up to 95mm (3.74") of precipitation.

How much does it rain in Sun City in December?

In Sun City, South Africa, during December, the rain falls for 19.6 days and regularly aggregates up to 95mm (3.74") of precipitation.

When are the longest days in Sun City?

The month with the longest days in Sun City is December, with an average of 13h and 42min of daylight.

What is the average length of the day in December in Sun City?

The average day length in December in Sun City, South Africa, is 13h and 41min.

When are sunrise and sunset in December in Sun City?

On the first day of December in Sun City, sunrise is at 05:12 and sunset at 18:48. On the last day of the month, sunrise is at 05:24 and sunset at 19:05 SAST.

How long on average sun shines in December in Sun City?

The average sunshine duration in December in Sun City, South Africa, is 11.3h.

What is the month with the highest UV index in Sun City?

The months with the highest UV index in Sun City, South Africa, are January through March, October through December, with an average maximum UV index of 6.

What is the UV index intensity in December in Sun City?

In December, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in December
Sun City, South Africa

Average temperature in December - Sun City, South Africa
  • Average high temperature in December: 29.1°C

The warmest month (with the highest average high temperature) is January (29.3°C).
The month with the lowest average high temperature is July (18.9°C).

  • Average low temperature in December: 18°C

The months with the highest average low temperature are January and December (18°C).
The coldest month (with the lowest average low temperature) is July (6.3°C).

Average pressure in December
Sun City, South Africa

Average pressure in December - Sun City, South Africa
  • Average pressure in December: 1012.6mbar

The month with the highest atmospheric pressure is July (1024.4mbar).
The month with the lowest atmospheric pressure is January (1012.3mbar).

Average wind speed in December
Sun City, South Africa

Average wind speed in December - Sun City, South Africa
  • Average wind speed in December: 8.9km/h

The windiest month (with the highest average wind speed) is October (10.6km/h).
The calmest months (with the lowest average wind speed) are March and May (7km/h).

Average humidity in December
Sun City, South Africa

Average humidity in December - Sun City, South Africa
  • Average humidity in December: 57%

The month with the highest relative humidity is February (61%).
The month with the lowest relative humidity is September (32%).

Average rainfall in December
Sun City, South Africa

Average rainfall in December - Sun City, South Africa
  • Average rainfall in December: 95mm

The wettest month (with the highest rainfall) is December (95mm).
The driest months (with the least rainfall) are July and August (1mm).

Average rainfall days in December
Sun City, South Africa

Average rainfall days in December - Sun City, South Africa
  • Average rainfall days in December: 19.6 days

The month with the highest number of rainy days is January (20.7 days).
The month with the least rainy days is August (1 days).

Average daylight in December /
Average sunshine in December
Sun City, South Africa

Average daylight in December / Average sunshine in December - Sun City, South Africa
  • Average daylight in December: 13h and 4min

The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).

  • Average sunshine in December: 11h and 2min

The month with the most sunshine is October (Average sunshine: 11h and 54min).
The months with the least sunshine are June and August (Average sunshine: 7h and 30min).

Average sunshine days in December
Sun City, South Africa

Average sunshine days in December - Sun City, South Africa
  • Average sunshine days in December: 6.9 days

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is January (6.6 days).

Average UV index in December
Sun City, South Africa

Average UV index in December - Sun City, South Africa
  • Average UV index in December: 6

The months with the highest UV index are January, February, March, October, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).

Average cloud cover in December
Sun City, South Africa

Average cloud cover in December - Sun City, South Africa
  • Average cloud cover in December: 24

The months with the most cloud cover are January and December (Cloud cover 24).
The months with the least cloud cover are July and August (Cloud cover 5).

Average visibility in December
Sun City, South Africa

Average visibility in December - Sun City, South Africa
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Sun City, South Africa

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