December weather forecast
Madureira, Brazil

The first month of the summer, December, is also a moderately hot month in Madureira, Brazil, with an average temperature ranging between min 21.8°C (71.2°F) and max 28.9°C (84°F).

Temperature

December observes an average high-temperature of a still moderately hot 28.9°C (84°F), marking an insignificant difference from November's 26.8°C (80.2°F). During December, an average low-temperature of 21.8°C (71.2°F) is observed.

Heat index

The heat index value during December is computed to be a torrid 35°C (95°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In Madureira, Brazil, the average relative humidity in December is 81%.

Rainfall

In Madureira, in December, it is raining for 23.8 days, with typically 84mm (3.31") of accumulated precipitation. In Madureira, during the entire year, the rain falls for 205.4 days and collects up to 637mm (25.08") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 30min of daylight.
On the first day of December, sunrise is at 04:59 and sunset at 18:25. On the last day of the month, sunrise is at 05:11 and sunset at 18:42 -03.

Sunshine

In Madureira, Brazil, the average sunshine in December is 7.8h.

UV index

The months with the highest UV index are January and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.