December weather forecastBig Bend, Swaziland

December

Weather in December

December, the year-end month, experiences the highest rainfall amount of 110mm (4.33"), marking the peak of Big Bend's heavy rain season. A small rise in temperature compared to the previous month is seen, coinciding with the longer daylight duration of 13.8 hours. Yet, the UV index stubbornly remains at 6, reflecting the weather patterns of this region. December's weather amplifies the beauty of Big Bend, dressing the city in a lush green and wrapping up the year with, literally, a splash.

Temperature

In Big Bend, the average temperatures in December are the highest, with a peak at 27.5°C (81.5°F) and a low of 17.5°C (63.5°F).

Heat index

For December, the heat index is appraised at a hot 31°C (87.8°F). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

In Big Bend, the average relative humidity in December is 79%.

Rainfall

December is the month with the most rainfall in Big Bend. Rain falls for 22.7 days and accumulates 110mm (4.33") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 48min of daylight.
On the first day of December, sunrise is at 04:50 and sunset at 18:32. On the last day of the month, sunrise is at 05:01 and sunset at 18:49 SAST.

Sunshine

In December, the average sunshine is 8.7h.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Updated: Jun 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December, marked by an average high-temperature of 27.5°C (81.5°F) and a low-temperature of 17.5°C (63.5°F), is the warmest month.

The high-temperature during December is 27.5°C (81.5°F) and the low-temperature is 17.5°C (63.5°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in December is appraised at 31°C (87.8°F).

In December, the average relative humidity is 79%.

The month with the most rainfall is December, when the rain falls for 22.7 days and typically aggregates up to 110mm (4.33") of precipitation.

In December, the rain falls for 22.7 days. Throughout December, 110mm (4.33") of precipitation is accumulated.

The month with the longest days is December, with an average of 13h and 48min of daylight.

The average day length in December is 13h and 47min.

On the first day of December, sunrise is at 04:50 and sunset at 18:32. On the last day of the month, sunrise is at 05:01 and sunset at 18:49 SAST.

In December, the average sunshine duration is 8.7h.

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

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

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

26.4°C

27.5°C

27.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.4km/h

8.4km/h

8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

7.1

5.3

6.7

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Big Bend, Swaziland

Average high temperature in December: 27.5°C

The warmest month (with the highest average high temperature) is December (27.5°C).
The month with the lowest average high temperature is July (21.4°C).

Average low temperature in December: 17.5°C

The month with the highest average low temperature is December (17.5°C).
The coldest month (with the lowest average low temperature) is July (9.3°C).

Average pressure in December
Big Bend, Swaziland

Average pressure in December: 1014.2mbar

The month with the highest atmospheric pressure is July (1024.1mbar).
The month with the lowest atmospheric pressure is January (1014mbar).

Average wind speed in December
Big Bend, Swaziland

Average wind speed in December: 7.1km/h

The windiest month (with the highest average wind speed) is September (8.2km/h).
The calmest month (with the lowest average wind speed) is March (6.1km/h).

Average humidity in December
Big Bend, Swaziland

Average humidity in December: 79%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (57%).

Average rainfall in December
Big Bend, Swaziland

Average rainfall in December: 110mm

The wettest month (with the highest rainfall) is December (110mm).
The driest month (with the least rainfall) is July (4mm).

Average rainfall days in December
Big Bend, Swaziland

Average rainfall days in December: 22.7 days

The month with the highest number of rainy days is December (22.7 days).
The month with the least rainy days is June (3.6 days).

Average daylight in December /
Average sunshine in December
Big Bend, Swaziland

Average daylight in December: 13h and 48min

The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).

Average sunshine in December: 8h and 42min

The month with the most sunshine is November (Average sunshine: 9h and 0min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).

Average sunshine days in December
Big Bend, Swaziland

Average sunshine days in December: 5.3 days

The month with the most sunshine days is June (25.4 days).
The month with the least sunshine days is December (5.3 days).

Average UV index in December
Big Bend, Swaziland

Average UV index in December: 6

The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August, September and October (UV index 5).