December weather forecast
Plácido de Castro, Brazil

December, the first month of the summer in Plácido de Castro, is also a hot month, with an average temperature fluctuating between 30.1°C (86.2°F) and 22.3°C (72.1°F).

Temperature

December's arrival brings an average high-temperature of a still hot 30.1°C (86.2°F), slightly deviating from November's 32.2°C (90°F). The low-temperature in Plácido de Castro, Brazil, averages to an agreeable 22.3°C (72.1°F) during the nights of December.

Heat index

December's average heat index is evaluated at a scorching 40°C (104°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In Plácido de Castro, the average relative humidity in December is 87%.

Rainfall

In December, the rain falls for 26.4 days. Throughout December, 180mm (7.09") of precipitation is accumulated. In Plácido de Castro, during the entire year, the rain falls for 233.4 days and collects up to 1251mm (49.25") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 42min of daylight.
On the first day of the month, sunrise is at 04:57 and sunset at 17:38. On the last day of December, in Plácido de Castro, Brazil, sunrise is at 05:10 and sunset at 17:53 -05.

Sunshine

In December, the average sunshine in Plácido de Castro is 6.2h.

UV index

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index in Plácido de Castro. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.