December weather forecastMatinha, Brazil

Weather in December

The first month of the summer, December, is still a tropical month in Matinha, Brazil, with an average temperature fluctuating between 23.1°C (73.6°F) and 32.5°C (90.5°F).

Temperature

The commencement of December introduces an average high-temperature of a still hot 32.5°C (90.5°F), closely mirroring the preceding month. Nightly temperatures in Matinha drop to an average low of 23.1°C (73.6°F) in December.

Heat index

For December, the heat index is computed to be a burning hot 45°C (113°F). Stay watchful: Heat exhaustion along with heat cramps are likely. Ongoing effort may cause heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Matinha, the average relative humidity in December is 78%.

Rainfall

In Matinha, during December, the rain falls for 26.5 days and regularly aggregates up to 133mm (5.24") of precipitation. Throughout the year, there are 265.4 rainfall days, and 1410mm (55.51") of precipitation is accumulated.

Daylight

With an average of 12h and 18min of daylight, December has the longest days of the year in Matinha.
On the first day of the month, sunrise is at 05:40 and sunset at 17:58. On the last day of December, in Matinha, sunrise is at 05:54 and sunset at 18:12 -03.

Sunshine

The average sunshine in December is 7.4h.

UV index

The months with the lowest UV index are January through April, June and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 6 in December suggests the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.