December weather forecastMariana, Brazil

December

Weather in December

The first month of the summer, December, is also a moderately hot month in Mariana, Brazil, with an average temperature ranging between min 17.6°C (63.7°F) and max 25.1°C (77.2°F).

Temperature

Stepping into December, Mariana records an average high-temperature of a still moderately hot 25.1°C (77.2°F), almost consistent with November. Mariana records an average nighttime low of 17.6°C (63.7°F) in December.

Humidity

In Mariana, the average relative humidity in December is 89%.

Rainfall

December is the month with the most rainfall. Rain falls for 26.8 days and accumulates 193mm (7.6") of precipitation.

Daylight

The month with the longest days in Mariana, Brazil, is December, with an average of 13h and 18min of daylight.
On the first day of the month, sunrise is at 05:04 and sunset at 18:21. On the last day of December, sunrise is at 05:16 and sunset at 18:37 -03.

Sunshine

The average sunshine in December in Mariana, Brazil, is 6.2h.

UV index

The months with the highest UV index in Mariana are January through December, with an average maximum UV index of 5. The months with the lowest UV index in Mariana are January through December, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a daily maximum UV index of 5 leads to the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

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

Frequently asked questions

In December, the average high-temperature and low-temperature in Mariana are 25.1°C (77.2°F) and 17.6°C (63.7°F) respectively.

The average relative humidity in December in Mariana, Brazil, is 89%.

December is the month with the most rainfall in Mariana, Brazil. Rain falls for 26.8 days and accumulates 193mm (7.6") of precipitation.

In Mariana, Brazil, in December, it is raining for 26.8 days, with typically 193mm (7.6") of accumulated precipitation.

December has the longest days of the year, with an average of 13h and 18min of daylight.

The average day length in December in Mariana, Brazil, is 13h and 20min.

On the first day of December, sunrise is at 05:04 and sunset at 18:21. On the last day of the month, sunrise is at 05:16 and sunset at 18:37 -03.

In December, the average sunshine duration is 6.2h.

The months with the highest UV index in Mariana are January through December, with an average maximum UV index of 5.

The months with the lowest UV index in Mariana, Brazil, are January through December, with an average maximum UV index of 5.

In Mariana, the average daily maximum UV index in December is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

24.2°C

25.1°C

25.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.8km/h

7.1km/h

7.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

2.6

2.1

5.1

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Mariana, Brazil

Average high temperature in December: 25.1°C

The warmest months (with the highest average high temperature) are January and February (25.6°C).
The month with the lowest average high temperature is June (21.4°C).

Average low temperature in December: 17.6°C

The month with the highest average low temperature is December (17.6°C).
The coldest month (with the lowest average low temperature) is August (12.1°C).

Average pressure in December
Mariana, Brazil

Average pressure in December: 1013mbar

The month with the highest atmospheric pressure is July (1021.1mbar).
The month with the lowest atmospheric pressure is December (1013mbar).

Average wind speed in December
Mariana, Brazil

Average wind speed in December: 6.5km/h

The windiest month (with the highest average wind speed) is September (7.8km/h).
The calmest months (with the lowest average wind speed) are April and May (5.6km/h).

Average humidity in December
Mariana, Brazil

Average humidity in December: 89%

The month with the highest relative humidity is March (91%).
The month with the lowest relative humidity is September (75%).

Average rainfall in December
Mariana, Brazil

Average rainfall in December: 193mm

The wettest month (with the highest rainfall) is December (193mm).
The driest month (with the least rainfall) is July (13mm).

Average rainfall days in December
Mariana, Brazil

Average rainfall days in December: 26.8 days

The month with the highest number of rainy days is December (26.8 days).
The month with the least rainy days is August (8.9 days).

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

Average daylight in December: 13h and 18min

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

Average sunshine in December: 6h and 12min

The month with the most sunshine is September (Average sunshine: 8h and 18min).
The month with the least sunshine is November (Average sunshine: 5h and 30min).

Average sunshine days in December
Mariana, Brazil

Average sunshine days in December: 2.1 days

The month with the most sunshine days is August (16.9 days).
The month with the least sunshine days is December (2.1 days).

Average UV index in December
Mariana, Brazil

Average UV index in December: 5

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