December weather forecast
Rustenburg, South Africa

englishespañol中文
Share

Weather in December

December witnesses the highest temperatures of the year in Rustenburg, truly celebrating the peak of summer. With the highest rainfall at 95mm (3.74"), this month is characterized by frequent, albeit short-lived, showers. Despite the rain, daylight hours are the longest, balanced by substantial sunshine periods, projecting the city in a vibrant, glowing light. Wind speeds moderate, adding a refreshing element to the warm weather conditions, while the increase in humidity contributes to a distinctly tropical feel. Concluding the year, December presents Rustenburg in a lively and exuberant mood.

Temperature

The start of December sees the average high-temperature at a still moderately hot 29.1°C (84.4°F), showing little difference from November's 28.7°C (83.7°F). During the month of December, Rustenburg's nighttime temperature lowers to an average of 18°C (64.4°F).

Heat index

December's average heat index is calculated to be a hot 31°C (87.8°F). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Realize that the values for the heat index are set for shaded places and light winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

The average relative humidity in December 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 in Rustenburg, sunrise is at 05:11 and sunset at 18:48. On the last day of the month, sunrise is at 05:22 and sunset at 19:05 SAST.

Sunshine

The average sunshine in December is 11.3h.

UV index

The months with the highest UV index 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 vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during December translates into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Frequently asked questions

Is it hot during December?

The average high-temperature, in December, in Rustenburg, is 29.1°C (84.4°F), while the average low-temperature is 18°C (64.4°F). In December, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 31°C (87.8°F).

What is the average humidity in December?

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

What is the rainiest month?

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

How many days does it rain in December?

In Rustenburg, South Africa, in December, it is raining for 19.6 days, with typically 95mm (3.74") of accumulated precipitation.

When are the longest days?

December has the longest days of the year, with an average of 13h and 42min of daylight.

How many hours of daylight does Rustenburg have in December?

In Rustenburg, the average day length in December is 13h and 43min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 05:11 and sunset at 18:48. On the last day of the month, sunrise is at 05:22 and sunset at 19:05 SAST.

How long on average sun shines in December?

In December, the average sunshine duration is 11.3h.

When is the highest UV index in Rustenburg?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Average temperature in December
Rustenburg, South Africa

Average temperature in December - Rustenburg, 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
Rustenburg, South Africa

Average pressure in December - Rustenburg, 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
Rustenburg, South Africa

Average wind speed in December - Rustenburg, 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
Rustenburg, South Africa

Average humidity in December - Rustenburg, 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
Rustenburg, South Africa

Average rainfall in December - Rustenburg, 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
Rustenburg, South Africa

Average rainfall days in December - Rustenburg, 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
Rustenburg, South Africa

Average daylight in December / Average sunshine in December - Rustenburg, 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
Rustenburg, South Africa

Average sunshine days in December - Rustenburg, 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
Rustenburg, South Africa

Average UV index in December - Rustenburg, 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
Rustenburg, South Africa

Average cloud cover in December - Rustenburg, 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
Rustenburg, South Africa

Average visibility in December - Rustenburg, 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).

Rustenburg, South Africa

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location