December weather forecast
Mhlume, Swaziland

The year in Mhlume concludes with December, which heralds the onset of the warmest weather. The average temperature increases significantly to reach a high of 30.5°C (86.9°F), marking it as one of the hottest months of the year. The rise in temperature coincides with the increase in cloud coverage and relative humidity, together indicating the arrival of more tropical conditions. The wind gusts reach up to 16.7km/h (10.4mph), ensuring a refreshing atmosphere despite the humidity. Overall, December weather in Mhlume provides a warm yet enchanting ambience for tourists and locals alike.

Temperature

With December's arrival, Mhlume's weather records an average high-temperature of a tropical 30.5°C (86.9°F), marking little difference from November's 29.1°C (84.4°F). Throughout the month of December, Mhlume witnesses an average temperature of 21.5°C (70.7°F).

Heat index

For most parts of December, the heat index is calculated to be a fiery hot 38°C (100.4°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. 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 are particularly relevant to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The average relative humidity in December in Mhlume is 75%.

Rainfall

In Mhlume, in December, it is raining for 18.5 days, with typically 65mm (2.56") of accumulated precipitation. In Mhlume, during the entire year, the rain falls for 135.5 days and collects up to 406mm (15.98") 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 December in Mhlume, sunrise is at 04:52 and sunset at 18:31. On the last day of the month, sunrise is at 05:03 and sunset at 18:48 SAST.

Sunshine

In December, the average sunshine in Mhlume, Swaziland, is 8.6h.

UV index

The months with the highest UV index are January and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 7 transforms into these recommendations:
Deflect overexposure. Sun protection is a necessity. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.