December weather forecast
Iacri, Brazil

December, the first month of the summer in Iacri, is still a warm month, with an average temperature ranging between max 29.6°C (85.3°F) and min 20.7°C (69.3°F).

Temperature

During December, Iacri observes a subtle ascent to a warm 29.6°C (85.3°F) from November's 30.2°C (86.4°F) in the average high-temperature. The nighttime temperature, during December, averages of 20.7°C (69.3°F).

Heat index

December's heat index is appraised at a fiery hot 36°C (96.8°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In December, the average relative humidity in Iacri is 79%.

Rainfall

In Iacri, during December, the rain falls for 25.5 days and regularly aggregates up to 160mm (6.3") of precipitation. Throughout the year, in Iacri, there are 193.5 rainfall days, and 1136mm (44.72") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 13h and 24min of daylight.
On the first day of December in Iacri, sunrise is at 05:30 and sunset at 18:53. On the last day of the month, sunrise is at 05:42 and sunset at 19:09 -03.

Sunshine

In Iacri, the average sunshine in December is 7.7h.

UV index

January through March, July through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 6 during December leads to these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.