December weather forecast
Barros Cassal, Brazil

December

Weather in December

The first month of the summer, December, is also a moderately hot month in Barros Cassal, Brazil, with an average temperature ranging between min 17.5°C (63.5°F) and max 29.1°C (84.4°F).

Temperature

December's weather records an average high-temperature of a still warm 29.1°C (84.4°F), showing little deviation from November. Throughout December nights, Barros Cassal registers an average low-temperature of 17.5°C (63.5°F).

Heat index

December's average heat index is estimated at a hot 34°C (93.2°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

With an average relative humidity of 76%, December is the least humid month.

Rainfall

In Barros Cassal, during December, the rain falls for 14.5 days and regularly aggregates up to 54mm (2.13") of precipitation. In Barros Cassal, during the entire year, the rain falls for 148.9 days and collects up to 783mm (30.83") of precipitation.

Daylight

With an average of 14h and 0min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:23 and sunset at 19:15. On the last day of December, sunrise is at 05:34 and sunset at 19:32 -03.

Sunshine

With an average of 8.5h of sunshine, December has the most sunshine of the year in Barros Cassal.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Barros Cassal. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 6 during December translates into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Frequently asked questions

How hot does it get in Barros Cassal in December?
Barros Cassal in December has an average high-temperature of 29.1°C (84.4°F) and an average low-temperature of 17.5°C (63.5°F). In December, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 34°C (93.2°F).
What is the least humid month in Barros Cassal?
The least humid month in Barros Cassal is December, with an average relative humidity of 76%.
What is the average humidity in December in Barros Cassal?
In Barros Cassal, the average relative humidity in December is 76%.
How much does it rain in Barros Cassal in December?
In Barros Cassal, in December, it is raining for 14.5 days, with typically 54mm (2.13") of accumulated precipitation.
When are the longest days in Barros Cassal?
With an average of 14h and 0min of daylight, December has the longest days of the year in Barros Cassal, Brazil.
How many hours of daylight does Barros Cassal have in December?
In December, the average day length is 13h and 58min.
When is the sunrise / sunset in December in Barros Cassal?
On the first day of December in Barros Cassal, Brazil, sunrise is at 05:23 and sunset at 19:15. On the last day of the month, sunrise is at 05:34 and sunset at 19:32 -03.
What month has the most sunshine in Barros Cassal?
With an average of 8.5h of sunshine, December has the most sunshine of the year in Barros Cassal, Brazil.
How many hours of sunshine does Barros Cassal have in December?
In Barros Cassal, Brazil, the average sunshine duration in December is 8.5h.
When is the highest UV index in Barros Cassal?
January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index.
What is the UV index reading in December in Barros Cassal?
In Barros Cassal, Brazil, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Barros Cassal, Brazil
  • Average high temperature in December: 29.1°C

The warmest month (with the highest average high temperature) is February (29.5°C).
The month with the lowest average high temperature is July (18°C).

  • Average low temperature in December: 17.5°C

The month with the highest average low temperature is February (18.6°C).
The coldest month (with the lowest average low temperature) is July (9.2°C).

Average pressure in December
Barros Cassal, Brazil
  • Average pressure in December: 1011.2mbar

The month with the highest atmospheric pressure is July (1019.9mbar).
The month with the lowest atmospheric pressure is December (1011.2mbar).

Average wind speed in December
Barros Cassal, Brazil
  • Average wind speed in December: 9.4km/h

The windiest month (with the highest average wind speed) is August (10.7km/h).
The calmest month (with the lowest average wind speed) is April (8.9km/h).

Average humidity in December
Barros Cassal, Brazil
  • Average humidity in December: 76%

The months with the highest relative humidity are May, June and July (85%).
The month with the lowest relative humidity is December (76%).

Average rainfall in December
Barros Cassal, Brazil
  • Average rainfall in December: 54mm

The wettest month (with the highest rainfall) is October (96mm).
The driest month (with the least rainfall) is February (44mm).

Average rainfall days in December
Barros Cassal, Brazil
  • Average rainfall days in December: 14.5 days

The month with the highest number of rainy days is January (14.8 days).
The month with the least rainy days is August (10.3 days).

Average daylight in December /
Average sunshine in December
Barros Cassal, Brazil
  • Average daylight in December: 14h and 0min

The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).

  • Average sunshine in December: 8h and 3min

The month with the most sunshine is December (Average sunshine: 8h and 30min).
The month with the least sunshine is September (Average sunshine: 7h and 12min).

Average sunshine days in December
Barros Cassal, Brazil
  • Average sunshine days in December: 15.1 days

The months with the most sunshine days are July and August (18.8 days).
The month with the least sunshine days is February (13.2 days).

Average UV index in December
Barros Cassal, Brazil
  • Average UV index in December: 6

The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).

Average cloud cover in December
Barros Cassal, Brazil
  • Average cloud cover in December: 34

The months with the most cloud cover are September and October (Cloud cover 41).
The month with the least cloud cover is November (Cloud cover 33).

Average visibility in December
Barros Cassal, Brazil
  • Average visibility in December: 9km

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

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