December weather forecastArroio do Só, Brazil

Weather in December

December, the first month of the summer in Arroio do Só, is a hot month, with temperature in the range of an average high of 30.1°C (86.2°F) and an average low of 18°C (64.4°F).

Temperature

As November turns into December, the average high-temperatures rest at a tropical 30.1°C (86.2°F), showing a minor variation from the prior month. Arroio do Só experiences a dramatic descent in temperature during December, with the average nighttime reading settling at a comfortable 18°C (64.4°F).

Heat index

In December, the average heat index is computed to be a sweltering 35°C (95°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. 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 crucial for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

December is the least humid month in Arroio do Só, with an average relative humidity of 70%.

Rainfall

In Arroio do Só, in December, it is raining for 14.2 days, with typically 78mm (3.07") of accumulated precipitation. In Arroio do Só, during the entire year, the rain falls for 146.4 days and collects up to 974mm (38.35") of precipitation.

Daylight

December has the longest days of the year, with an average of 14h and 0min of daylight.
On the first day of the month, sunrise is at 05:25 and sunset at 19:21. On the last day of December, in Arroio do Só, sunrise is at 05:36 and sunset at 19:38 -03.

Sunshine

With an average of 8.7h of sunshine, December has the most sunshine of the year.

UV index

In December, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 6 translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.