December weather forecastChaval, Brazil

Weather in December

December, the first month of the summer in Chaval, is still a hot month, with an average temperature fluctuating between 33.3°C (91.9°F) and 24.5°C (76.1°F).

Temperature

With December's advent, Chaval sees an average high-temperature of a still hot 33.3°C (91.9°F), subtly shifted from November's 34.3°C (93.7°F). Chaval's nighttime temperature during December is consistently averaged at a warm 24.5°C (76.1°F).

Heat index

The heat index for December is computed to be a scorching 44°C (111.2°F). Stay watchful: Heat exhaustion along with heat cramps are likely. Ongoing effort may cause heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In Chaval, the average relative humidity in December is 68%.

Rainfall

In December, the rain falls for 9 days. Throughout December, 29mm (1.14") of precipitation is accumulated. Throughout the year, there are 141.3 rainfall days, and 549mm (21.61") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 18min of daylight.
On the first day of December, sunrise is at 05:25 and sunset at 17:42. On the last day of the month, sunrise is at 05:39 and sunset at 17:57 -03.

Sunshine

In Chaval, the average sunshine in December is 7.6h.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 7 in December suggests the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.