December weather forecast
Mendewa, Sierra Leone

The first month of the winter, December, is still a hot month in Mendewa, Sierra Leone, with an average temperature ranging between min 20.8°C (69.4°F) and max 32.8°C (91°F).

Temperature

In the transition from November to December, Mendewa reports an average high-temperature of a still hot 32.8°C (91°F), indicating a close resemblance to the prior month. Mendewa reports an average low-temperature of 20.8°C (69.4°F) during the nights of December.

Heat index

The heat index for December is calculated to be a blistering 44°C (111.2°F). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In December, the average relative humidity is 72%.

Rainfall

In Mendewa, Sierra Leone, in December, during 7.3 rainfall days, 10mm (0.39") of precipitation is typically accumulated. In Mendewa, during the entire year, the rain falls for 256.6 days and collects up to 1628mm (64.09") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 42min of daylight.
On the first day of the month, sunrise is at 06:44 and sunset at 18:25. On the last day of December, sunrise is at 06:59 and sunset at 18:38 GMT.

Sunshine

The average sunshine in December in Mendewa, Sierra Leone, is 9.1h.

UV index

The months with the highest UV index in Mendewa are January through April, November and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, an average UV index of 7 transforms into the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.