December weather forecastIrajá, Brazil

Weather in December

December, the first month of the summer in Irajá, is still a warm month, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 21.8°C (71.2°F).

Temperature

The transition from November to December sees an average high-temperature of a still moderately hot 28.9°C (84°F), indicating a minor variance from the prior month. Nighttime temperatures hover around an average low of 21.8°C (71.2°F) in December.

Heat index

For December, the heat index is appraised at a very hot 35°C (95°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for 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.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In Irajá, the average relative humidity in December is 81%.

Rainfall

In Irajá, during December, the rain falls for 23.8 days and regularly aggregates up to 84mm (3.31") of precipitation. Throughout the year, in Irajá, there are 205.4 rainfall days, and 637mm (25.08") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 04:59 and sunset at 18:25. On the last day of December, in Irajá, sunrise is at 05:11 and sunset at 18:41 -03.

Sunshine

In December, the average sunshine in Irajá is 7.8h.

UV index

January and December, with an average maximum UV index of 7, are months with the highest UV index in Irajá. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.