December weather forecastCongonhinhas, Brazil

December

Weather in December

December, the first month of the summer in Congonhinhas, is also a moderately hot month, with an average temperature fluctuating between 19.5°C (67.1°F) and 29.4°C (84.9°F).

Temperature

The advent of December signifies a minor shift to an average high-temperature of a still warm 29.4°C (84.9°F), aligning closely with November. Congonhinhas records a steady low-temperature average of 19.5°C (67.1°F) during December.

Heat index

In December, the average heat index is calculated to be a very hot 36°C (96.8°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In Congonhinhas, the average relative humidity in December is 81%.

Rainfall

In Congonhinhas, in December, during 25.1 rainfall days, 139mm (5.47") of precipitation is typically accumulated. In Congonhinhas, during the entire year, the rain falls for 202.5 days and collects up to 1195mm (47.05") of precipitation.

Daylight

With an average of 13h and 36min of daylight, December has the longest days of the year in Congonhinhas, Brazil.
On the first day of December in Congonhinhas, sunrise is at 05:26 and sunset at 18:55. On the last day of the month, sunrise is at 05:38 and sunset at 19:12 -03.

Sunshine

In December, the average sunshine is 7.9h.

UV index

April through July and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 5 in December translates into these instructions:
Guard yourself - Avoiding sunburn is suggested. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Congonhinhas, records 29.4°C (84.9°F), while the low-temperature is 19.5°C (67.1°F). In December, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 36°C (96.8°F).

The average relative humidity in December is 81%.

In Congonhinhas, in December, it is raining for 25.1 days, with typically 139mm (5.47") of accumulated precipitation.

The month with the longest days in Congonhinhas, Brazil, is December, with an average of 13h and 36min of daylight.

In Congonhinhas, Brazil, the average day length in December is 13h and 34min.

On the first day of December, sunrise is at 05:26 and sunset at 18:55. On the last day of the month, sunrise is at 05:38 and sunset at 19:12 -03.

In December, the average sunshine duration in Congonhinhas, Brazil, is 7.9h.

The months with the lowest UV index are April through July and December, with an average maximum UV index of 5.

The average daily maximum UV index in December in Congonhinhas, Brazil, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

29.5°C

29.4°C

28.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.5km/h

9.7km/h

9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

9.1

4.6

3.1

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Congonhinhas, Brazil

Average high temperature in December: 29.4°C

The warmest month (with the highest average high temperature) is October (29.7°C).
The month with the lowest average high temperature is June (22.5°C).

Average low temperature in December: 19.5°C

The months with the highest average low temperature are February and December (19.5°C).
The coldest months (with the lowest average low temperature) are June and July (13.3°C).

Average pressure in December
Congonhinhas, Brazil

Average pressure in December: 1010.8mbar

The month with the highest atmospheric pressure is July (1019mbar).
The month with the lowest atmospheric pressure is December (1010.8mbar).

Average wind speed in December
Congonhinhas, Brazil

Average wind speed in December: 8.8km/h

The windiest month (with the highest average wind speed) is September (10.9km/h).
The calmest month (with the lowest average wind speed) is February (8.1km/h).

Average humidity in December
Congonhinhas, Brazil

Average humidity in December: 81%

The months with the highest relative humidity are January, February and June (86%).
The month with the lowest relative humidity is September (64%).

Average rainfall in December
Congonhinhas, Brazil

Average rainfall in December: 139mm

The wettest month (with the highest rainfall) is January (197mm).
The driest month (with the least rainfall) is August (40mm).

Average rainfall days in December
Congonhinhas, Brazil

Average rainfall days in December: 25.1 days

The month with the highest number of rainy days is January (27 days).
The month with the least rainy days is August (7.1 days).

Average daylight in December /
Average sunshine in December
Congonhinhas, Brazil

Average daylight in December: 13h and 36min

The month with the longest days is December (Average daylight: 13h and 36min).
The month with the shortest days is June (Average daylight: 10h and 42min).

Average sunshine in December: 7h and 54min

The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 12min).

Average sunshine days in December
Congonhinhas, Brazil

Average sunshine days in December: 4.6 days

The month with the most sunshine days is August (22.5 days).
The month with the least sunshine days is February (2.7 days).

Average UV index in December
Congonhinhas, Brazil

Average UV index in December: 5

The months with the highest UV index are January, February, March, August, September, October and November (UV index 6).
The months with the lowest UV index are April, May, June, July and December (UV index 5).