December weather forecast
Porto dos Gaúchos, Brazil

December, the first month of the summer in Porto dos Gaúchos, is still a warm month, with temperature in the range of an average high of 28.5°C (83.3°F) and an average low of 20.6°C (69.1°F).

Temperature

Entering December, Porto dos Gaúchos's average high-temperature reads a still moderately hot 28.5°C (83.3°F), indicating a close resemblance to the previous month's climate. Porto dos Gaúchos reports a consistent average low-temperature of 20.6°C (69.1°F) throughout December nights.

Heat index

December's heat index is estimated at a very hot 35°C (95°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In December, the average relative humidity is 89%.

Rainfall

The month with the most rainfall is December, when the rain falls for 30.2 days and typically aggregates up to 267mm (10.51") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 48min of daylight.
On the first day of December, sunrise is at 05:16 and sunset at 18:01. On the last day of the month, sunrise is at 05:29 and sunset at 18:16 -04.

Sunshine

In Porto dos Gaúchos, Brazil, the average sunshine in December is 5.8h.

UV index

The months with the lowest UV index are January, March and December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In December, an average UV index of 5 transforms into the following instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.