December weather forecast
Brazzaville, Congo

Capping off the year, December in Brazzaville offers similar weather to November, punctuated with high rainfall at 167mm (6.57"). Despite being the last month of the year, December sees no significant change in the temperature or wind levels. Instead, December carries forward November's weather pattern, featuring a cooler climate, steady rainfall and higher humidity levels. The maintained atmospheric conditions ensure a pleasurable ending to the year.

Temperature

December in Brazzaville welcomes an average high-temperature of a still moderately hot 29.8°C (85.6°F), not much different from the preceding month. During the month of December, Brazzaville's nighttime temperature lowers to an average of 21.5°C (70.7°F).

Heat index

December's average heat index is evaluated at a sweltering 38°C (100.4°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

With an average relative humidity of 83%, December is the most humid month in Brazzaville, Congo.

Rainfall

In Brazzaville, in December, it is raining for 29 days, with typically 167mm (6.57") of accumulated precipitation. In Brazzaville, during the entire year, the rain falls for 243.1 days and collects up to 1109mm (43.66") of precipitation.

Daylight

With an average of 12h and 24min of daylight, December has the longest days of the year.
On the first day of December in Brazzaville, sunrise is at 05:37 and sunset at 17:58. On the last day of the month, sunrise is at 05:51 and sunset at 18:13 WAT.

Sunshine

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

UV index

February, June, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In December, a regular UV index of 6 translates into these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.