December weather forecast
Monrovia, Liberia

December signals the year's end with consistent weather conditions showing minimal variation. The month experiences its lowest rainfall of 59mm (2.32"), announcing the arrival of the dry season. Comparing with the previous months, the difference in temperature, daylight hours, and sunshine isn't significant. The relatively steady weather pattern sends off a warm farewell to the year while laying a consistent foundation for the incoming January.

Temperature

Monrovia's December average high-temperature settles at a still warm 29.5°C (85.1°F), showing a near match with the preceding month. Monrovia welcomes an average low temperature of 25.3°C (77.5°F) in December, a gentle shift from the day's high.

Heat index

December's average heat index is calculated to be a sweltering 35°C (95°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
One should consider that heat index numbers are for shaded settings and light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Monrovia, the average relative humidity in December is 77%.

Rainfall

In Monrovia, in December, it is raining for 19.2 days, with typically 59mm (2.32") of accumulated precipitation. In Monrovia, during the entire year, the rain falls for 298.8 days and collects up to 1903mm (74.92") of precipitation.

Sea temperature

In Monrovia, in December, the average water temperature is 28.8°C (83.8°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

December has the shortest days of the year, with an average of 11h and 48min of daylight.
On the first day of December, sunrise is at 06:38 and sunset at 18:25. On the last day of the month, sunrise is at 06:53 and sunset at 18:39 GMT.

Sunshine

In Monrovia, the average sunshine in December is 8.9h.

UV index

The months with the highest UV index in Monrovia, Liberia, are January through May, October through 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 ordinary individuals.
Note: The maximum UV index of 7 during December translates into these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat. Warning! The reflection of sand and water increases the UV dose.