December weather forecast
Masa, Sierra Leone

The first month of the winter, December, is still a hot month in Masa, Sierra Leone, with temperature in the range of an average high of 31.3°C (88.3°F) and an average low of 24.1°C (75.4°F).

Temperature

The advent of December denotes an average high-temperature of a still tropical 31.3°C (88.3°F), subtly different from November's 30.2°C (86.4°F). An average low-temperature of 24.1°C (75.4°F) marks the nights throughout December.

Heat index

For most parts of December, the heat index is appraised at an extremely hot 40°C (104°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are essentially critical for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In December, the average relative humidity is 74%.

Rainfall

In December, the rain falls for 11 days. Throughout December, 21mm (0.83") of precipitation is accumulated. In Masa, during the entire year, the rain falls for 239 days and collects up to 1820mm (71.65") of precipitation.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year.
On the first day of December in Masa, sunrise is at 06:43 and sunset at 18:26. On the last day of the month, sunrise is at 06:58 and sunset at 18:40 GMT.

Sunshine

In Masa, the average sunshine in December is 9h.

UV index

The months with the highest UV index are January through June, September through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 7 transforms into these recommendations:
Ward off overexposure. Defence against solar harm is crucial. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.