December weather forecast
Matelândia, Brazil

The first month of the summer, December, is a hot month in Matelândia, Brazil, with an average temperature fluctuating between 19.9°C (67.8°F) and 30°C (86°F).

Temperature

December commences with an average high-temperature of a tropical 30°C (86°F), showing little deviation from November's 29.3°C (84.7°F). Nighttime temperature in Matelândia, Brazil, dips to a mean of 19.9°C (67.8°F) during December.

Heat index

The heat index for December is evaluated at a sweltering 37°C (98.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in December in Matelândia is 79%.

Rainfall

The month with the most rainfall is December, when the rain falls for 22.4 days and typically aggregates up to 147mm (5.79") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 42min of daylight.
On the first day of December, sunrise is at 05:37 and sunset at 19:13. On the last day of the month, sunrise is at 05:48 and sunset at 19:29 -03.

Sunshine

In December, the average sunshine is 8.7h.

UV index

The months with the highest UV index in Matelândia are January through March, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 6 suggests these recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.