December weather forecast
Alterosa, Brazil

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Weather in December

The first month of the summer, December, is also a moderately hot month in Alterosa, Brazil, with temperature in the range of an average low of 17.9°C (64.2°F) and an average high of 26.5°C (79.7°F).

Temperature

Alterosa experiences an average high-temperature of a still warm 26.5°C (79.7°F) in December, marking an insignificant shift from 26.1°C (79°F) in November. Throughout the month of December, Alterosa expects an average low of 17.9°C (64.2°F).

Humidity

In December, the average relative humidity is 87%.

Rainfall

In December, in Alterosa, the rain falls for 28.9 days. Throughout December, 200mm (7.87") of precipitation is accumulated. Throughout the year, in Alterosa, there are 213.8 rainfall days, and 1252mm (49.29") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 13h and 24min of daylight.
On the first day of December in Alterosa, sunrise is at 05:13 and sunset at 18:33. On the last day of the month, sunrise is at 05:25 and sunset at 18:49 -03.

Sunshine

January and December, with an average of 6.8h of sunshine, are months with the least sunshine in Alterosa, Brazil.

UV index

The months with the lowest UV index in Alterosa are January through July, September through December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 5 in December leads to these recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

What is the temperature in December in Alterosa?

In Alterosa, 26.5°C (79.7°F) is the average high-temperature and 17.9°C (64.2°F) is the average low-temperature during December. In October, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is evaluated at 31°C (87.8°F).

What is the average humidity in December in Alterosa?

In Alterosa, Brazil, the average relative humidity in December is 87%.

How many days does it rain in December in Alterosa?

In Alterosa, during December, the rain falls for 28.9 days and regularly aggregates up to 200mm (7.87") of precipitation.

When are the longest days in Alterosa?

With an average of 13h and 24min of daylight, December has the longest days of the year in Alterosa.

What is the average length of the day in December in Alterosa?

The average day length in December in Alterosa, Brazil, is 13h and 24min.

What time are sunrise and sunset in December in Alterosa?

In December, on the first day of the month, sunrise is at 05:13 and sunset at 18:33. On the last day of the month, in Alterosa, sunrise is at 05:25 and sunset at 18:49 -03.

What is the month with the least sunshine in Alterosa?

The months with the least sunshine in Alterosa are January and December, with an average of 6.8h of sunshine.

How many hours of sunshine does Alterosa have in December?

The average sunshine duration in December in Alterosa, Brazil, is 6.8h.

When is the lowest UV index in Alterosa?

January through July, September through December, with an average maximum UV index of 5, are months with the lowest UV index in Alterosa, Brazil.

What is the UV index intensity in December in Alterosa?

In December, the average daily maximum UV index in Alterosa, Brazil, is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.

Average temperature in December
Alterosa, Brazil

Average temperature in December - Alterosa, Brazil
  • Average high temperature in December: 26.5°C

The warmest month (with the highest average high temperature) is October (27.6°C).
The month with the lowest average high temperature is June (21.8°C).

  • Average low temperature in December: 17.9°C

The month with the highest average low temperature is December (17.9°C).
The coldest month (with the lowest average low temperature) is July (11.3°C).

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Average pressure in December
Alterosa, Brazil

Average pressure in December - Alterosa, Brazil
  • Average pressure in December: 1012.7mbar

The month with the highest atmospheric pressure is July (1020.6mbar).
The month with the lowest atmospheric pressure is December (1012.7mbar).

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Average wind speed in December
Alterosa, Brazil

Average wind speed in December - Alterosa, Brazil
  • Average wind speed in December: 6.6km/h

The windiest months (with the highest average wind speed) are September and October (7.7km/h).
The calmest month (with the lowest average wind speed) is April (5.9km/h).

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Average humidity in December
Alterosa, Brazil

Average humidity in December - Alterosa, Brazil
  • Average humidity in December: 87%

The months with the highest relative humidity are January, March and April (89%).
The month with the lowest relative humidity is September (66%).

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Average rainfall in December
Alterosa, Brazil

Average rainfall in December - Alterosa, Brazil
  • Average rainfall in December: 200mm

The wettest month (with the highest rainfall) is January (240mm).
The driest month (with the least rainfall) is July (13mm).

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Average rainfall days in December
Alterosa, Brazil

Average rainfall days in December - Alterosa, Brazil
  • Average rainfall days in December: 28.9 days

The month with the highest number of rainy days is December (28.9 days).
The month with the least rainy days is August (5.2 days).

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

Average daylight in December / Average sunshine in December - Alterosa, Brazil
  • Average daylight in December: 13h and 2min

The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are August and September (Average sunshine: 9h and 6min).
The months with the least sunshine are January and December (Average sunshine: 6h and 48min).

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Average sunshine days in December
Alterosa, Brazil

Average sunshine days in December - Alterosa, Brazil
  • Average sunshine days in December: 1.1 days

The month with the most sunshine days is August (24.1 days).
The month with the least sunshine days is December (1.1 days).

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Average UV index in December
Alterosa, Brazil

Average UV index in December - Alterosa, Brazil
  • Average UV index in December: 5

The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, September, October, November and December (UV index 5).

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Average cloud cover in December
Alterosa, Brazil

Average cloud cover in December - Alterosa, Brazil
  • Average cloud cover in December: 61

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in December
Alterosa, Brazil

Average visibility in December - Alterosa, Brazil
  • Average visibility in December: 7km

The months with the highest visibility are August and September (9km).
The months with the lowest visibility are January, March, April and May (6km).

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Alterosa, Brazil

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