December weather forecastFloraí, Brazil

Weather in December

The first month of the summer, December, is still a warm month in Floraí, Brazil, with an average temperature fluctuating between 29.8°C (85.6°F) and 20.6°C (69.1°F).

Temperature

The shift to December signals an average high-temperature of a moderately hot 29.8°C (85.6°F), subtly varied from November's 30°C (86°F). Floraí's nighttime temperature in December falls to an average of 20.6°C (69.1°F).

Heat index

December's mean heat index is computed to be a torrid 37°C (98.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Floraí, Brazil, the average relative humidity in December is 80%.

Rainfall

In Floraí, during December, the rain falls for 24.7 days and regularly aggregates up to 173mm (6.81") of precipitation. Throughout the year, there are 188.5 rainfall days, and 1243mm (48.94") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 05:34 and sunset at 19:02. On the last day of December, sunrise is at 05:46 and sunset at 19:18 -03.

Sunshine

In Floraí, the average sunshine in December is 8h.

UV index

January through March, August through December, with an average maximum UV index of 6, are months with the highest UV index in Floraí. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 6 during December translates into the following guidance:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.