December weather forecastMataraca, Brazil

Weather in December

December, the first month of the summer in Mataraca, is still a hot month, with an average temperature varying between 24°C (75.2°F) and 30.5°C (86.9°F).

Temperature

With the onset of December, a modest change to a still tropical 30.5°C (86.9°F) from November's 30.3°C (86.5°F) is noted in high-temperature. During December, an average low-temperature of 24°C (75.2°F) is observed in Mataraca.

Heat index

December's mean heat index is calculated to be a sweltering 37°C (98.6°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In December, the average relative humidity in Mataraca, Brazil, is 72%.

Rainfall

In December, in Mataraca, the rain falls for 15.2 days. Throughout December, 18mm (0.71") of precipitation is accumulated. Throughout the year, in Mataraca, Brazil, there are 199.6 rainfall days, and 460mm (18.11") of precipitation is accumulated.

Daylight

The month with the longest days in Mataraca is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 04:55 and sunset at 17:23. On the last day of December, sunrise is at 05:08 and sunset at 17:38 -03.

Sunshine

In December, the average sunshine is 7.7h.

UV index

January through March, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.