December weather forecastAruanã, Brazil

December

Weather in December

December, the first month of the summer in Aruanã, is still a warm month, with temperature in the range of an average low of 21.2°C (70.2°F) and an average high of 29.5°C (85.1°F).

Temperature

The start of December marks an average high-temperature of a moderately hot 29.5°C (85.1°F), hardly distinguishable from the conditions in November. Aruanã records an average low of 21.2°C (70.2°F) throughout the nights in December.

Heat index

For December, the heat index is evaluated at a torrid 37°C (98.6°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in December is 82%.

Rainfall

The wettest months in Aruanã are November and December, with an average 104mm (4.09") of rainfall.

Daylight

The month with the longest days in Aruanã is December, with an average of 13h and 0min of daylight.
On the first day of the month, sunrise is at 05:45 and sunset at 18:42. On the last day of December, sunrise is at 05:57 and sunset at 18:57 -03.

Sunshine

In Aruanã, the average sunshine in December is 8.1h.

UV index

January through July, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 6 suggests this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

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

Frequently asked questions

The high-temperature, in December, in Aruanã, is 29.5°C (85.1°F), while the low-temperature averages to 21.2°C (70.2°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in December is evaluated at 37°C (98.6°F).

In Aruanã, Brazil, the average relative humidity in December is 82%.

The months with the most rainfall are November and December, with an average 104mm (4.09") of precipitation.

In December, in Aruanã, the rain falls for 26.5 days. Throughout December, 104mm (4.09") of precipitation is accumulated.

The month with the longest days is December, with an average of 13h and 0min of daylight.

In December, the average day length in Aruanã, Brazil, is 13h and 0min.

On the first day of December, sunrise is at 05:45 and sunset at 18:42. On the last day of the month, sunrise is at 05:57 and sunset at 18:57 -03.

In December, the average sunshine duration in Aruanã, Brazil, is 8.1h.

January through July, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Aruanã.

The average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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

30.7°C

29.5°C

29.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.5km/h

6.6km/h

6.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

2.9

3.2

5.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Aruanã, Brazil

Average high temperature in December: 29.5°C

The warmest month (with the highest average high temperature) is September (35.9°C).
The month with the lowest average high temperature is May (28.8°C).

Average low temperature in December: 21.2°C

The month with the highest average low temperature is October (22.5°C).
The coldest month (with the lowest average low temperature) is July (16.8°C).

Average pressure in December
Aruanã, Brazil

Average pressure in December: 1010.3mbar

The month with the highest atmospheric pressure is July (1015.7mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

Average wind speed in December
Aruanã, Brazil

Average wind speed in December: 5.9km/h

The windiest month (with the highest average wind speed) is August (7.1km/h).
The calmest month (with the lowest average wind speed) is March (4.8km/h).

Average humidity in December
Aruanã, Brazil

Average humidity in December: 82%

The month with the highest relative humidity is March (85%).
The month with the lowest relative humidity is September (39%).

Average rainfall in December
Aruanã, Brazil

Average rainfall in December: 104mm

The wettest months (with the highest rainfall) are November and December (104mm).
The driest month (with the least rainfall) is July (1mm).

Average rainfall days in December
Aruanã, Brazil

Average rainfall days in December: 26.5 days

The month with the highest number of rainy days is December (26.5 days).
The month with the least rainy days is July (0.8 days).

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

Average daylight in December: 13h and 0min

The month with the longest days is December (Average daylight: 13h and 0min).
The month with the shortest days is June (Average daylight: 11h and 18min).

Average sunshine in December: 8h and 6min

The months with the most sunshine are June, July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 7h and 24min).

Average sunshine days in December
Aruanã, Brazil

Average sunshine days in December: 3.2 days

The month with the most sunshine days is July (30.3 days).
The month with the least sunshine days is November (2.9 days).

Average UV index in December
Aruanã, Brazil

Average UV index in December: 6

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

Average cloud cover in December
Aruanã, Brazil

Average cloud cover in December: 52

The months with the most cloud cover are January and December (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 9).

Average visibility in December
Aruanã, Brazil

Average visibility in December: 8km

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