December weather forecastCabeceiras, Brazil

December

Weather in December

The first month of the summer, December, is also a moderately hot month in Cabeceiras, Brazil, with temperature in the range of an average high of 27°C (80.6°F) and an average low of 19.3°C (66.7°F).

Temperature

The commencement of December introduces an average high-temperature of a still moderately hot 27°C (80.6°F), closely mirroring the preceding month. During December, the average low-temperature in Cabeceiras is a comfortable 19.3°C (66.7°F).

Heat index

December's mean heat index is computed to be a tropical 30°C (86°F). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
The standards for the heat index are set for locations in shade and under light breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

In December, the average relative humidity is 84%.

Rainfall

In Cabeceiras, Brazil, in December, it is raining for 29.1 days, with typically 229mm (9.02") of accumulated precipitation. In Cabeceiras, during the entire year, the rain falls for 216.3 days and collects up to 1385mm (54.53") of precipitation.

Daylight

The month with the longest days in Cabeceiras, Brazil, is December, with an average of 13h and 6min of daylight.
On the first day of December, sunrise is at 05:26 and sunset at 18:27. On the last day of the month, sunrise is at 05:39 and sunset at 18:42 -03.

Sunshine

In Cabeceiras, Brazil, the average sunshine in December is 7.2h.

UV index

February, April through June, November 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 ordinary person.
Note: The UV index of 5 during December translates into the following guidance:
Guard yourself - Avoiding sunburn is suggested. Minimize direct exposure to the Sun during midday when its radiation is at its peak. 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.

Frequently asked questions

In December, in Cabeceiras, the average high-temperature is 27°C (80.6°F), and the average low-temperature is 19.3°C (66.7°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in December is computed to be 30°C (86°F).

In December, the average relative humidity in Cabeceiras, Brazil, is 84%.

In Cabeceiras, Brazil, during December, the rain falls for 29.1 days and regularly aggregates up to 229mm (9.02") of precipitation.

The month with the longest days in Cabeceiras, Brazil, is December, with an average of 13h and 6min of daylight.

In December, the average day length is 13h and 3min.

In December, on the first day of the month, sunrise is at 05:26 and sunset at 18:27. On the last day of the month, in Cabeceiras, sunrise is at 05:39 and sunset at 18:42 -03.

In Cabeceiras, Brazil, the average sunshine duration in December is 7.2h.

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

The average daily maximum UV index in December in Cabeceiras, Brazil, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Cabeceiras, Brazil

  • Average high temperature in December: 27°C

The warmest month (with the highest average high temperature) is September (31.5°C).
The month with the lowest average high temperature is May (25.5°C).

  • Average low temperature in December: 19.3°C

The month with the highest average low temperature is October (20.5°C).
The coldest month (with the lowest average low temperature) is July (14.7°C).

Average pressure in December
Cabeceiras, Brazil

  • Average pressure in December: 1011.8mbar

The month with the highest atmospheric pressure is July (1018.4mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).

Average wind speed in December
Cabeceiras, Brazil

  • Average wind speed in December: 6.7km/h

The windiest months (with the highest average wind speed) are August and September (8.8km/h).
The calmest month (with the lowest average wind speed) is March (5.9km/h).

Average humidity in December
Cabeceiras, Brazil

  • Average humidity in December: 84%

The month with the highest relative humidity is March (87%).
The month with the lowest relative humidity is September (44%).

Average rainfall in December
Cabeceiras, Brazil

  • Average rainfall in December: 229mm

The wettest month (with the highest rainfall) is November (249mm).
The driest month (with the least rainfall) is July (1mm).

Average rainfall days in December
Cabeceiras, Brazil

  • Average rainfall days in December: 29.1 days

The month with the highest number of rainy days is December (29.1 days).
The month with the least rainy days is August (1.8 days).

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

  • Average daylight in December: 13h and 6min

The month with the longest days is December (Average daylight: 13h and 6min).
The month with the shortest days is June (Average daylight: 11h and 12min).

  • Average sunshine in December: 7h and 12min

The month with the most sunshine is September (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 7h and 0min).

Average sunshine days in December
Cabeceiras, Brazil

  • Average sunshine days in December: 1.5 days

The month with the most sunshine days is August (28.3 days).
The months with the least sunshine days are February and March (1.4 days).

Average UV index in December
Cabeceiras, Brazil

  • Average UV index in December: 5

The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are February, April, May, June, November and December (UV index 5).

Average cloud cover in December
Cabeceiras, Brazil

  • Average cloud cover in December: 53

The months with the most cloud cover are March, April and November (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in December
Cabeceiras, Brazil

  • Average visibility in December: 8km

The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are March and April (7km).