December weather forecast
Costa Marques, Brazil

The first month of the summer, December, is also a hot month in Costa Marques, Brazil, with an average temperature varying between 23°C (73.4°F) and 30.6°C (87.1°F).

Temperature

Costa Marques's average high-temperature in December is a still tropical 30.6°C (87.1°F), marking an insignificant difference from the 32°C (89.6°F) of November. The nights of December anticipate an average low-temperature of 23°C (73.4°F).

Heat index

In December, the average heat index is computed to be a blistering 40°C (104°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In Costa Marques, the average relative humidity in December is 81%.

Rainfall

In Costa Marques, Brazil, during December, the rain falls for 27.2 days and regularly aggregates up to 174mm (6.85") of precipitation. Throughout the year, there are 215.7 rainfall days, and 1318mm (51.89") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 48min of daylight.
On the first day of the month, sunrise is at 05:42 and sunset at 18:30. On the last day of December, sunrise is at 05:54 and sunset at 18:45 -04.

Sunshine

The average sunshine in December is 8.1h.

UV index

In Costa Marques, the average daily maximum UV index in December is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.