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

As Monrovia, Liberia, steps into December, the average high-temperature holds at a still moderately hot 29.5°C (85.1°F), hinting at a minor fluctuation from the prior month. Monrovia, during December nights, witnesses an average temperature marginally cooler than its daytime highs, at a still moderately hot 25.3°C (77.5°F).

Heat index

For December, the heat index is computed to be a very hot 35°C (95°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', determines the feeling of heat when you account for the relative humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In December, the average relative humidity 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: In water activities such as swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed highly pleasurable for extended periods without any unease.

Daylight

The month with the shortest days is December, 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 are January through May, October through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 7 in December transforms into this advice:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be alert! The reflection of water and sand augments UV radiation intensity.