December weather forecast
Arês, Brazil

December

Weather in December

The first month of the summer, December, is a tropical month in Arês, Brazil, with an average temperature varying between 30.1°C (86.2°F) and 25.3°C (77.5°F).

Temperature

As Arês, Brazil, welcomes December, the average high-temperature records at a tropical 30.1°C (86.2°F), marking an insignificant deviation from the prior month. Arês maintains a minor drop in temperature during December nights, with averages of 25.3°C (77.5°F).

Heat index

December's average heat index is estimated at a sweltering 36°C (96.8°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in December in Arês is 72%.

Rainfall

In Arês, Brazil, in December, during 13.3 rainfall days, 14mm (0.55") of precipitation is typically accumulated. Throughout the year, there are 173.2 rainfall days, and 403mm (15.87") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 04:56 and sunset at 17:23. On the last day of December, sunrise is at 05:09 and sunset at 17:38 -03.

Sunshine

The average sunshine in December is 8.2h.

UV index

January through June, August through December, with an average maximum UV index of 7, are months with the highest UV index in Arês, Brazil. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 7 in December transforms into the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Frequently asked questions

Is it hot in Arês during December?
In December, the average high-temperature and low-temperature are 30.1°C (86.2°F) and 25.3°C (77.5°F) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in December is estimated at 36°C (96.8°F).
What is the average humidity in December in Arês?
In Arês, the average relative humidity in December is 72%.
How much does it rain in Arês in December?
In December, in Arês, Brazil, the rain falls for 13.3 days. Throughout December, 14mm (0.55") of precipitation is accumulated.
When are the longest days in Arês?
With an average of 12h and 30min of daylight, December has the longest days of the year in Arês.
How many hours of daylight does Arês have in December?
In Arês, Brazil, the average day length in December is 12h and 29min.
What time are sunrise and sunset in December in Arês?
In December, on the first day of the month, sunrise is at 04:56 and sunset at 17:23. On the last day of the month, sunrise is at 05:09 and sunset at 17:38 -03.
How long on average sun shines in December in Arês?
The average sunshine duration in December in Arês, Brazil, is 8.2h.
What are the months with the highest UV index in Arês?
The months with the highest UV index in Arês are January through June, August through December, with an average maximum UV index of 7.
How high is the UV index in December in Arês?
The average daily maximum UV index in December in Arês is 7. A UV Index of 6 to 7 symbolizes a high health risk 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
Arês, Brazil
  • Average high temperature in December: 30.1°C

The warmest months (with the highest average high temperature) are February and March (30.8°C).
The month with the lowest average high temperature is July (28.1°C).

  • Average low temperature in December: 25.3°C

The month with the highest average low temperature is March (25.8°C).
The coldest month (with the lowest average low temperature) is August (22.7°C).

Average pressure in December
Arês, Brazil
  • Average pressure in December: 1011.5mbar

The month with the highest atmospheric pressure is August (1015.1mbar).
The month with the lowest atmospheric pressure is February (1011.2mbar).

Average wind speed in December
Arês, Brazil
  • Average wind speed in December: 20.3km/h

The windiest month (with the highest average wind speed) is September (24.1km/h).
The calmest month (with the lowest average wind speed) is April (16.6km/h).

Average humidity in December
Arês, Brazil
  • Average humidity in December: 72%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is November (71%).

Average rainfall in December
Arês, Brazil
  • Average rainfall in December: 14mm

The wettest month (with the highest rainfall) is June (66mm).
The driest month (with the least rainfall) is November (7mm).

Average rainfall days in December
Arês, Brazil
  • Average rainfall days in December: 13.3 days

The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (9.4 days).

Average daylight in December /
Average sunshine in December
Arês, Brazil
  • Average daylight in December: 12h and 3min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 48min).

  • Average sunshine in December: 8h and 1min

The months with the most sunshine are March and November (Average sunshine: 8h and 18min).
The month with the least sunshine is July (Average sunshine: 6h and 48min).

Average sunshine days in December
Arês, Brazil
  • Average sunshine days in December: 12.5 days

The month with the most sunshine days is March (14.5 days).
The month with the least sunshine days is September (5.9 days).

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

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

Average cloud cover in December
Arês, Brazil
  • Average cloud cover in December: 39

The month with the most cloud cover is July (Cloud cover 49).
The months with the least cloud cover are March and November (Cloud cover 37).

Average visibility in December
Arês, Brazil
  • Average visibility in December: 10km

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

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