December weather forecast
Iguatu, Brazil

The first month of the summer, December, is also a hot month in Iguatu, Brazil, with temperature in the range of an average low of 23.9°C (75°F) and an average high of 34.2°C (93.6°F).

Temperature

As December unfolds, the average high-temperature reaches a tropical 34.2°C (93.6°F), hinting at a slight fluctuation from the previous month. Iguatu's nighttime temperature during December is consistently averaged at a warm 23.9°C (75°F).

Heat index

During December, the heat index is calculated to be a blisteringly hot 40°C (104°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in December in Iguatu is 54%.

Rainfall

In Iguatu, in December, during 13.8 rainfall days, 43mm (1.69") of precipitation is typically accumulated. In Iguatu, Brazil, during the entire year, the rain falls for 168.6 days and collects up to 686mm (27.01") of precipitation.

Daylight

December has the longest days of the year in Iguatu, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:12 and sunset at 17:40. On the last day of December, sunrise is at 05:25 and sunset at 17:55 -03.

Sunshine

In December, the average sunshine is 8.4h.

UV index

January, March, July through December, with an average maximum UV index of 7, are months with the highest UV index in Iguatu. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 7 suggests this advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.