December weather forecast
Benoni, South Africa

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Weather in December

December in Benoni wraps up the year with warm temperatures and high rainfall, mirroring the weather conditions seen at the year's start. With an increase in cloud cover, this month holds the highest humidity since the dawn of the hot season. As the year comes full circle, the duration of daylight, the city's visibility, and wind speed display a repetitive pattern, reminding us of the weather registered in January. In closing, the steady weather conditions of December in Benoni encapsulate the city's reliably diverse climate.

Temperature

With the onset of December, the average high-temperature stands at a still moderately hot 27°C (80.6°F), closely aligned with November's 26.6°C (79.9°F). During the month of December, Benoni experiences a steady low-temperature average of 16°C (60.8°F).

Heat index

The heat index in December is computed to be 28°C (82.4°F). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.
Consider that heat index readings are for situations in the shade and light wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Benoni, the average relative humidity in December is 61%.

Rainfall

In Benoni, in December, during 19.5 rainfall days, 82mm (3.23") of precipitation is typically accumulated. In Benoni, during the entire year, the rain falls for 115.7 days and collects up to 418mm (16.46") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 42min of daylight.
On the first day of the month, sunrise is at 05:05 and sunset at 18:45. On the last day of December, sunrise is at 05:17 and sunset at 19:02 SAST.

Sunshine

The average sunshine in December is 11.2h.

UV index

In Benoni, the average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 5 transforms into these recommendations:
Adopt protective measures - It is advised to guard against sun damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Frequently asked questions

What are the temperatures in Benoni in December?

The high-temperature, in December, in Benoni, is 27°C (80.6°F), while the low-temperature averages to 16°C (60.8°F). In December, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 28°C (82.4°F).

What is the average humidity in December in Benoni?

In December, the average relative humidity is 61%.

How many days does it rain in December in Benoni?

In Benoni, in December, it is raining for 19.5 days, with typically 82mm (3.23") of accumulated precipitation.

When are the longest days in Benoni?

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

How many hours of daylight does Benoni have in December?

In December, the average day length is 13h and 45min.

What time are sunrise and sunset in December in Benoni?

On the first day of December in Benoni, South Africa, sunrise is at 05:05 and sunset at 18:45. On the last day of the month, sunrise is at 05:17 and sunset at 19:02 SAST.

How many hours of sunshine does Benoni have in December?

The average sunshine duration in December in Benoni, South Africa, is 11.2h.

What is the UV index intensity in December in Benoni?

In December, the average daily maximum UV index in Benoni is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.

Average temperature in December
Benoni, South Africa

Average temperature in December - Benoni, South Africa
  • Average high temperature in December: 27°C

The warmest month (with the highest average high temperature) is January (27.1°C).
The month with the lowest average high temperature is July (17.6°C).

  • Average low temperature in December: 16°C

The months with the highest average low temperature are January and December (16°C).
The coldest month (with the lowest average low temperature) is July (5.9°C).

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Average pressure in December
Benoni, South Africa

Average pressure in December - Benoni, South Africa
  • Average pressure in December: 1013.5mbar

The month with the highest atmospheric pressure is July (1024.7mbar).
The month with the lowest atmospheric pressure is January (1013.3mbar).

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Average wind speed in December
Benoni, South Africa

Average wind speed in December - Benoni, South Africa
  • Average wind speed in December: 9.9km/h

The windiest months (with the highest average wind speed) are October and November (11.6km/h).
The calmest month (with the lowest average wind speed) is May (8km/h).

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Average humidity in December
Benoni, South Africa

Average humidity in December - Benoni, South Africa
  • Average humidity in December: 61%

The months with the highest relative humidity are January and February (65%).
The month with the lowest relative humidity is September (35%).

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Average rainfall in December
Benoni, South Africa

Average rainfall in December - Benoni, South Africa
  • Average rainfall in December: 82mm

The wettest month (with the highest rainfall) is January (86mm).
The driest month (with the least rainfall) is July (0mm).

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Average rainfall days in December
Benoni, South Africa

Average rainfall days in December - Benoni, South Africa
  • Average rainfall days in December: 19.5 days

The month with the highest number of rainy days is January (20.3 days).
The month with the least rainy days is July (0.9 days).

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Average daylight in December /
Average sunshine in December
Benoni, South Africa

Average daylight in December / Average sunshine in December - Benoni, 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 30min).

  • Average sunshine in December: 11h and 1min

The month with the most sunshine is October (Average sunshine: 11h and 48min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).

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Average sunshine days in December
Benoni, South Africa

Average sunshine days in December - Benoni, South Africa
  • Average sunshine days in December: 8.3 days

The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is January (8 days).

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Average UV index in December
Benoni, South Africa

Average UV index in December - Benoni, South Africa
  • Average UV index in December: 5

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

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Average cloud cover in December
Benoni, South Africa

Average cloud cover in December - Benoni, South Africa
  • Average cloud cover in December: 26

The month with the most cloud cover is January (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in December
Benoni, South Africa

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

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).

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Benoni, South Africa

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