December weather forecastMarialva, Brazil

December

Weather in December

The first month of the summer, December, is also a moderately hot month in Marialva, Brazil, with an average temperature ranging between max 29.5°C (85.1°F) and min 20.1°C (68.2°F).

Temperature

Marialva experiences an average high-temperature of a still moderately hot 29.5°C (85.1°F) in December, subtly different from November's 29.7°C (85.5°F). Marialva's average low-temperature is measured at a pleasant 20.1°C (68.2°F) during December.

Heat index

December's mean heat index is computed to be a sweltering 36°C (96.8°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In Marialva, Brazil, the average relative humidity in December is 79%.

Rainfall

In December, in Marialva, the rain falls for 25.4 days. Throughout December, 170mm (6.69") of precipitation is accumulated. In Marialva, during the entire year, the rain falls for 196.7 days and collects up to 1243mm (48.94") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 36min of daylight.
On the first day of the month, sunrise is at 05:32 and sunset at 19:00. On the last day of December, in Marialva, Brazil, sunrise is at 05:43 and sunset at 19:17 -03.

Sunshine

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

UV index

The months with the lowest UV index are April through July and December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a regular UV index of 5 translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

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

Frequently asked questions

In Marialva, in December, the average high-temperature is 29.5°C (85.1°F), and the average low-temperature is 20.1°C (68.2°F). In December, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 36°C (96.8°F).

In December, the average relative humidity in Marialva is 79%.

In Marialva, Brazil, in December, during 25.4 rainfall days, 170mm (6.69") of precipitation is typically accumulated.

With an average of 13h and 36min of daylight, December has the longest days of the year in Marialva.

The average day length in December is 13h and 34min.

On the first day of December in Marialva, Brazil, sunrise is at 05:32 and sunset at 19:00. On the last day of the month, sunrise is at 05:43 and sunset at 19:17 -03.

In December, the average sunshine duration is 8.1h.

April through July and December, with an average maximum UV index of 5, are months with the lowest UV index.

In Marialva, the average daily maximum UV index in December is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from 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

29.7°C

29.5°C

28.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.6km/h

10.3km/h

9.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

4.5

2.7

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Marialva, Brazil

Average high temperature in December: 29.5°C

The warmest months (with the highest average high temperature) are October and November (29.7°C).
The month with the lowest average high temperature is June (22.3°C).

Average low temperature in December: 20.1°C

The month with the highest average low temperature is February (20.2°C).
The coldest months (with the lowest average low temperature) are June and July (13.8°C).

Average pressure in December
Marialva, Brazil

Average pressure in December: 1010.1mbar

The month with the highest atmospheric pressure is July (1018.7mbar).
The month with the lowest atmospheric pressure is December (1010.1mbar).

Average wind speed in December
Marialva, Brazil

Average wind speed in December: 9.3km/h

The windiest month (with the highest average wind speed) is August (11.8km/h).
The calmest months (with the lowest average wind speed) are January and February (8.7km/h).

Average humidity in December
Marialva, Brazil

Average humidity in December: 79%

The months with the highest relative humidity are January, February and June (85%).
The month with the lowest relative humidity is September (63%).

Average rainfall in December
Marialva, Brazil

Average rainfall in December: 170mm

The wettest month (with the highest rainfall) is January (195mm).
The driest month (with the least rainfall) is August (44mm).

Average rainfall days in December
Marialva, Brazil

Average rainfall days in December: 25.4 days

The month with the highest number of rainy days is January (26.8 days).
The month with the least rainy days is August (7.2 days).

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

Average daylight in December: 13h and 36min

The month with the longest days is December (Average daylight: 13h and 36min).
The month with the shortest days is June (Average daylight: 10h and 42min).

Average sunshine in December: 8h and 6min

The month with the most sunshine is August (Average sunshine: 9h and 6min).
The months with the least sunshine are January and February (Average sunshine: 7h and 24min).

Average sunshine days in December
Marialva, Brazil

Average sunshine days in December: 4.5 days

The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (2.3 days).

Average UV index in December
Marialva, Brazil

Average UV index in December: 5

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

Average cloud cover in December
Marialva, Brazil

Average cloud cover in December: 41

The months with the most cloud cover are January and February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 19).

Average visibility in December
Marialva, Brazil

Average visibility in December: 8km

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