December weather forecast
Águas de Chapecó, Brazil

The first month of the summer, December, is also a moderately hot month in Águas de Chapecó, Brazil, with an average temperature varying between 18.2°C (64.8°F) and 29.6°C (85.3°F).

Temperature

December's average high-temperature stands at a still moderately hot 29.6°C (85.3°F), showing little deviation from November's 27.9°C (82.2°F). Águas de Chapecó, during the month of December, experiences an average low-temperature of 18.2°C (64.8°F).

Heat index

For most parts of December, the heat index is computed to be a very hot 36°C (96.8°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

With an average relative humidity of 78%, December is the least humid month in Águas de Chapecó.

Rainfall

In Águas de Chapecó, 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

December has the longest days of the year in Águas de Chapecó, with an average of 13h and 48min of daylight.
On the first day of December, sunrise is at 05:29 and sunset at 19:12. On the last day of the month, sunrise is at 05:40 and sunset at 19:29 -03.

Sunshine

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

UV index

The months with the highest UV index in Águas de Chapecó are January through March, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.