December weather forecast
Mendekelema, Sierra Leone

The first month of the winter, December, is still a tropical month in Mendekelema, Sierra Leone, with temperature in the range of an average high of 32.6°C (90.7°F) and an average low of 20.1°C (68.2°F).

Temperature

An average high-temperature of a still tropical 32.6°C (90.7°F) marks December, exhibiting a close resemblance to the conditions in November. Mendekelema experiences a substantial decline from the daytime high temperatures in December, settling on an average low of 20.1°C (68.2°F).

Heat index

The heat index in December is computed to be a scorching 42°C (107.6°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in December is 70%.

Rainfall

In Mendekelema, in December, during 8.7 rainfall days, 10mm (0.39") of precipitation is typically accumulated. In Mendekelema, during the entire year, the rain falls for 270.4 days and collects up to 1590mm (62.6") of precipitation.

Daylight

The month with the shortest days in Mendekelema is December, with an average of 11h and 42min of daylight.
On the first day of December, sunrise is at 06:40 and sunset at 18:21. On the last day of the month, sunrise is at 06:55 and sunset at 18:34 GMT.

Sunshine

In December, the average sunshine is 9.1h.

UV index

The months with the highest UV index are January through April and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.