December weather forecastAberdeen, Sierra Leone

Weather in December

December in Aberdeen, Sierra Leone brings with it an all-out dry season. The city witnesses a meagre 7mm (0.28") rainfall, making it one of the driest months of the year. This reduction refuses to impede the high visibility, a consistent feature weather. A characteristic of December is the low wind speed, providing the city with a calm and serene ambiance. The arrival of the dry season ensures that the year ends on a mild, dry note, awaiting the repeat of the annual weather cycle.

Temperature

With the advent of December, Aberdeen's high-temperatures adjust to a still hot 31°C (87.8°F), closely aligning with the preceding month. An average temperature of 24.5°C (76.1°F) is recorded during the nights in December.

Heat index

In December, the heat index is evaluated at a torrid 37°C (98.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Aberdeen, Sierra Leone, the average relative humidity in December is 69%.

Rainfall

In December, the rain falls for 4 days. Throughout December, 7mm (0.28") of precipitation is accumulated. In Aberdeen, Sierra Leone, during the entire year, the rain falls for 205.9 days and collects up to 1507mm (59.33") of precipitation.

Daylight

With an average of 11h and 36min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 06:52 and sunset at 18:32. On the last day of the month, sunrise is at 07:07 and sunset at 18:45 GMT.

Sunshine

In December, the average sunshine is 9.7h.

UV index

January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.