December weather forecastVarjota, Brazil

Weather in December

The first month of the summer, December, is still a tropical month in Varjota, Brazil, with an average temperature fluctuating between 22.6°C (72.7°F) and 33.2°C (91.8°F).

Temperature

The initiation of December records an average high-temperature of a still tropical 33.2°C (91.8°F), displaying a near consistency with the previous month. An average low-temperature of 22.6°C (72.7°F) is noted in Varjota during the month of December.

Heat index

December's mean heat index is appraised at a scorching 40°C (104°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. 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. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In Varjota, the average relative humidity in December is 60%.

Rainfall

In Varjota, during December, the rain falls for 11.4 days and regularly aggregates up to 50mm (1.97") of precipitation. Throughout the year, in Varjota, there are 184 rainfall days, and 817mm (32.17") of precipitation is accumulated.

Daylight

With an average of 12h and 24min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:20 and sunset at 17:41. On the last day of the month, sunrise is at 05:34 and sunset at 17:56 -03.

Sunshine

The average sunshine in December is 8.3h.

UV index

The months with the highest UV index are July through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 7 during December, leads to the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.