December weather forecastCaiçara, Brazil

Weather in December

December, the first month of the summer in Caiçara, is also a moderately hot month, with an average temperature fluctuating between 18.2°C (64.8°F) and 29.6°C (85.3°F).

Temperature

The shift to December signals an average high-temperature of a still moderately hot 29.6°C (85.3°F), subtly varied from November's 27.9°C (82.2°F). In Caiçara, December is marked by an average low-temperature of 18.2°C (64.8°F).

Heat index

December's heat index is computed to be a sweltering 36°C (96.8°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to the direct sun might augment heat index values 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. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

December is the least humid month, with an average relative humidity of 78%.

Rainfall

In Caiçara, in December, during 19.1 rainfall days, 114mm (4.49") of precipitation is typically accumulated. Throughout the year, there are 185.1 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Daylight

The month with the longest days in Caiçara is December, with an average of 13h and 48min of daylight.
On the first day of December in Caiçara, Brazil, sunrise is at 05:30 and sunset at 19:15. On the last day of the month, sunrise is at 05:42 and sunset at 19:31 -03.

Sunshine

The months with the most sunshine in Caiçara are November and December, with an average of 8.8h of sunshine.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 6 during December, leads to the following recommendations:
Deflect overexposure. Sun protection is a necessity. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.