December weather forecast
Itanhém, Brazil

December, the first month of the summer in Itanhém, is a tropical month, with temperature in the range of an average low of 21.2°C (70.2°F) and an average high of 30.3°C (86.5°F).

Temperature

A minor adjustment in Itanhém's average high-temperature is noted with the start of December, touching a tropical 30.3°C (86.5°F) from November's 29°C (84.2°F). Itanhém, in December, witnesses an average low-temperature of 21.2°C (70.2°F).

Heat index

In December, the heat index is computed to be a fiery hot 39°C (102.2°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

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

Rainfall

The month with the most rainfall is December, when the rain falls for 22 days and typically aggregates up to 123mm (4.84") of precipitation.

Daylight

With an average of 13h and 6min of daylight, December has the longest days of the year in Itanhém.
On the first day of December, sunrise is at 04:58 and sunset at 18:03. On the last day of the month, sunrise is at 05:10 and sunset at 18:18 -03.

Sunshine

The average sunshine in December in Itanhém is 8.5h.

UV index

In December, the average daily maximum UV index in Itanhém is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 6 suggests these recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.