December weather forecast
Bossoroca, Brazil

December

Weather in December

The first month of the summer, December, is a tropical month in Bossoroca, Brazil, with temperature in the range of an average low of 19.2°C (66.6°F) and an average high of 30.5°C (86.9°F).

Temperature

With December's advent, Bossoroca sees an average high-temperature of a hot 30.5°C (86.9°F), subtly shifted from November's 28.5°C (83.3°F). In Bossoroca, December's nights observe an average temperature dip to a refreshing 19.2°C (66.6°F).

Heat index

December's average heat index is calculated to be a very hot 37°C (98.6°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Understand that the heat index values take into account shaded locations and mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

With an average relative humidity of 71%, December is the least humid month.

Rainfall

In Bossoroca, during December, the rain falls for 16.5 days and regularly aggregates up to 106mm (4.17") of precipitation. In Bossoroca, during the entire year, the rain falls for 155.2 days and collects up to 1071mm (42.17") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 54min of daylight.
On the first day of December, sunrise is at 05:33 and sunset at 19:24. On the last day of the month, sunrise is at 05:44 and sunset at 19:41 -03.

Sunshine

In December, the average sunshine is 8.7h.

UV index

With an average maximum UV index of 7, December is the month with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 7 suggests these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

How hot does it get in December?
The average high-temperature and low-temperature during December are 30.5°C (86.9°F) and 19.2°C (66.6°F) respectively. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in December is calculated to be 37°C (98.6°F).
What is the least humid month?
With an average relative humidity of 71%, December is the least humid month.
What is the average humidity in December?
The average relative humidity in December is 71%.
How much does it rain in December?
In Bossoroca, during December, the rain falls for 16.5 days and regularly aggregates up to 106mm (4.17") of precipitation.
When are the longest days?
With an average of 13h and 54min of daylight, December has the longest days of the year in Bossoroca.
What is the average length of the day in December?
In Bossoroca, the average day length in December is 13h and 56min.
When is the sunrise / sunset in December?
In December, on the first day of the month, sunrise is at 05:33 and sunset at 19:24. On the last day of the month, sunrise is at 05:44 and sunset at 19:41 -03.
How long on average sun shines in December?
In Bossoroca, the average sunshine duration in December is 8.7h.
When is the highest UV index?
The month with the highest UV index is December, with an average maximum UV index of 7.
What is the UV index intensity in December?
In December, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Bossoroca, Brazil
  • Average high temperature in December: 30.5°C

The warmest month (with the highest average high temperature) is January (31.2°C).
The month with the lowest average high temperature is July (18.4°C).

  • Average low temperature in December: 19.2°C

The month with the highest average low temperature is January (20.1°C).
The coldest month (with the lowest average low temperature) is July (9.9°C).

Average pressure in December
Bossoroca, Brazil
  • Average pressure in December: 1009.4mbar

The month with the highest atmospheric pressure is July (1018.5mbar).
The month with the lowest atmospheric pressure is December (1009.4mbar).

Average wind speed in December
Bossoroca, Brazil
  • Average wind speed in December: 9.5km/h

The windiest months (with the highest average wind speed) are August and October (11km/h).
The calmest months (with the lowest average wind speed) are March and April (8.7km/h).

Average humidity in December
Bossoroca, Brazil
  • Average humidity in December: 71%

The month with the highest relative humidity is June (87%).
The month with the lowest relative humidity is December (71%).

Average rainfall in December
Bossoroca, Brazil
  • Average rainfall in December: 106mm

The wettest month (with the highest rainfall) is November (127mm).
The driest month (with the least rainfall) is August (58mm).

Average rainfall days in December
Bossoroca, Brazil
  • Average rainfall days in December: 16.5 days

The month with the highest number of rainy days is December (16.5 days).
The month with the least rainy days is August (10.6 days).

Average daylight in December /
Average sunshine in December
Bossoroca, Brazil
  • Average daylight in December: 13h and 5min

The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 18min).

  • Average sunshine in December: 8h and 4min

The month with the most sunshine is November (Average sunshine: 8h and 48min).
The month with the least sunshine is June (Average sunshine: 6h and 54min).

Average sunshine days in December
Bossoroca, Brazil
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is August (18.9 days).
The month with the least sunshine days is February (13.3 days).

Average UV index in December
Bossoroca, Brazil
  • Average UV index in December: 7

The month with the highest UV index is December (UV index 7).
The months with the lowest UV index are May, June and July (UV index 4).

Average cloud cover in December
Bossoroca, Brazil
  • Average cloud cover in December: 30

The month with the most cloud cover is May (Cloud cover 44).
The month with the least cloud cover is November (Cloud cover 26).

Average visibility in December
Bossoroca, Brazil
  • Average visibility in December: 9km

The months with the highest visibility are January, February, March, October, November and December (9km).
The months with the lowest visibility are April, May, June, July, August and September (8km).

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