December weather forecast
Brazzaville, Congo

Beautiful orange flower petals in front of the National Library in Brazzaville, Congo
Beautiful orange flower petals in front of the National Library in Brazzaville, Congo

Weather in December

December, the first month of the summer in Brazzaville, is still a warm month, with an average temperature varying between 29.8°C (85.6°F) and 21.5°C (70.7°F).

Temperature

In December, the average high-temperature is relatively the same as in November - a still warm 29.8°C (85.6°F). The average low-temperature, is 21.5°C (70.7°F).

Heat index

In December, the average heat index is appraised at a torrid 38°C (100.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, wind, clothing). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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.

Rainfall

In December, in Brazzaville, the rain falls for 29 days. Throughout December, 167mm (6.57") of precipitation is accumulated. Throughout the year, in Brazzaville, there are 243.1 rainfall days, and 1109mm (43.66") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 22min of daylight.
On the first day of December, sunrise is at 05:37 and sunset at 17:58. On the last day of the month, sunrise is at 05:50 and sunset at 18:12 WAT.

Sunshine

The average sunshine in December in Brazzaville, Congo, is 9h.

UV index

February, June, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Brazzaville. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in December interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in December in Brazzaville?

In December, in Brazzaville, the average high-temperature is 29.8°C (85.6°F), and the average low-temperature is 21.5°C (70.7°F). in December, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 38°C (100.4°F).

What is the most humid month in Brazzaville?

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

What is the average humidity in December in Brazzaville?

The average relative humidity in December in Brazzaville is 83%.

How much does it rain in Brazzaville in December?

In December, in Brazzaville, the rain falls for 29 days. Throughout December, 167mm (6.57") of precipitation is accumulated.

When are the longest days in Brazzaville?

With an average of 12h and 22min of daylight, December has the longest days of the year in Brazzaville, Congo.

How many hours of daylight does Brazzaville have in December?

In Brazzaville, Congo, the average day length in December is 12h and 22min.

When are sunrise and sunset in December in Brazzaville?

In December, on the first day of the month, sunrise is at 05:37 and sunset at 17:58. On the last day of the month, in Brazzaville, Congo, sunrise is at 05:50 and sunset at 18:12 WAT.

How many hours of sunshine does Brazzaville have in December?

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

When is the lowest UV index in Brazzaville?

The months with the lowest UV index in Brazzaville are February, June, October through December, with an average maximum UV index of 6.

How high is the UV index in December in Brazzaville?

In Brazzaville, Congo, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Brazzaville, Congo

Average temperature in December - Brazzaville, Congo
  • Average high temperature in December: 29.8°C

The warmest month (with the highest average high temperature) is August (33.1°C).
The month with the lowest average high temperature is November (29.5°C).

  • Average low temperature in December: 21.5°C

The month with the highest average low temperature is September (22.9°C).
The coldest months (with the lowest average low temperature) are June and July (20.8°C).

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Average pressure in December
Brazzaville, Congo

Average pressure in December - Brazzaville, Congo
  • Average pressure in December: 1011.1mbar

The month with the highest atmospheric pressure is June (1013.1mbar).
The month with the lowest atmospheric pressure is February (1010.3mbar).

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Average wind speed in December
Brazzaville, Congo

Average wind speed in December - Brazzaville, Congo
  • Average wind speed in December: 4.7km/h

The windiest month (with the highest average wind speed) is August (8.6km/h).
The calmest months (with the lowest average wind speed) are April and December (4.7km/h).

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Average humidity in December
Brazzaville, Congo

Average humidity in December - Brazzaville, Congo
  • Average humidity in December: 83%

The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in December
Brazzaville, Congo

Average rainfall in December - Brazzaville, Congo
  • Average rainfall in December: 167mm

The wettest month (with the highest rainfall) is November (173mm).
The driest month (with the least rainfall) is July (2mm).

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Average rainfall days in December
Brazzaville, Congo

Average rainfall days in December - Brazzaville, Congo
  • Average rainfall days in December: 29 days

The month with the highest number of rainy days is December (29 days).
The month with the least rainy days is July (2.9 days).

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Average daylight in December /
Average sunshine in December
Brazzaville, Congo

Average daylight in December / Average sunshine in December - Brazzaville, Congo
  • Average daylight in December: 12h and 22min

The month with the longest days is December (Average daylight: 12h and 22min).
The month with the shortest days is June (Average daylight: 11h and 53min).

  • Average sunshine in December: 9h and 0min

The month with the most sunshine is August (Average sunshine: 9h and 30min).
The months with the least sunshine are June, October and November (Average sunshine: 7h and 0min).

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Average sunshine days in December
Brazzaville, Congo

Average sunshine days in December - Brazzaville, Congo
  • Average sunshine days in December: 1.3 days

The month with the most sunshine days is July (27.4 days).
The month with the least sunshine days is December (1.3 days).

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Average UV index in December
Brazzaville, Congo

Average UV index in December - Brazzaville, Congo
  • Average UV index in December: 6

The months with the highest UV index are January, March, April, May, July, August and September (UV index 7).
The months with the lowest UV index are February, June, October, November and December (UV index 6).

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Average cloud cover in December
Brazzaville, Congo

Average cloud cover in December - Brazzaville, Congo
  • Average cloud cover in December: 50

The month with the most cloud cover is November (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 19).

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Average visibility in December
Brazzaville, Congo

Average visibility in December - Brazzaville, Congo
  • Average visibility in December: 8km

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, March, April, November and December (8km).

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