December weather forecast
Frecheirinha, Brazil

December, the first month of the summer in Frecheirinha, is still a tropical month, with an average temperature varying between 21.8°C (71.2°F) and 32°C (89.6°F).

Temperature

The commencement of December notes an average high-temperature of a still hot 32°C (89.6°F), exhibiting little difference from the previous month. Nightly temperatures drop to an average low of 21.8°C (71.2°F) in December.

Heat index

During December, the heat index is calculated to be a very hot 39°C (102.2°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in December is 67%.

Rainfall

In Frecheirinha, during December, the rain falls for 16.5 days and regularly aggregates up to 64mm (2.52") of precipitation. Throughout the year, in Frecheirinha, there are 197.8 rainfall days, and 1036mm (40.79") of precipitation is accumulated.

Daylight

With an average of 12h and 18min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:22 and sunset at 17:42. On the last day of December, sunrise is at 05:36 and sunset at 17:56 -03.

Sunshine

In December, the average sunshine in Frecheirinha is 8.2h.

UV index

The months with the highest UV index in Frecheirinha are August through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 7 during December, leads to the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.