December weather forecast
Barcarena, Brazil

The first month of the summer, December, is still a tropical month in Barcarena, Brazil, with temperature in the range of an average low of 24°C (75.2°F) and an average high of 32°C (89.6°F).

Temperature

The shift to December signals an average high-temperature of a still tropical 32°C (89.6°F), subtly varied from November's 33.7°C (92.7°F). December's average low-temperature reading settles at a moderately hot 24°C (75.2°F).

Heat index

For December, the heat index is estimated at a scorching 44°C (111.2°F). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

The average relative humidity in December in Barcarena is 78%.

Rainfall

In Barcarena, in December, it is raining for 25.9 days, with typically 144mm (5.67") of accumulated precipitation. Throughout the year, in Barcarena, there are 283.5 rainfall days, and 1348mm (53.07") of precipitation is accumulated.

Sea temperature

In Barcarena, the average seawater temperature in December is 28°C (82.4°F).
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

With an average of 12h and 12min of daylight, December has the longest days of the year in Barcarena, Brazil.
On the first day of the month, sunrise is at 05:57 and sunset at 18:09. On the last day of December, in Barcarena, sunrise is at 06:11 and sunset at 18:24 -03.

Sunshine

The average sunshine in December in Barcarena is 7.7h.

UV index

The months with the highest UV index are January through March, May through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 during December translates into the following directions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Warning! Sand and water reflections boost the intensity of UV exposure.