December weather forecastIrapuã, Brazil

Weather in December

The first month of the summer, December, is still a warm month in Irapuã, Brazil, with an average temperature fluctuating between 29.4°C (84.9°F) and 21°C (69.8°F).

Temperature

Irapuã experiences an average high-temperature of a still warm 29.4°C (84.9°F) in December, marking an insignificant shift from 29.9°C (85.8°F) in November. Irapuã experiences an average low-temperature of 21°C (69.8°F) in the month of December.

Heat index

December's average heat index is evaluated at a torrid 36°C (96.8°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in December is 80%.

Rainfall

In Irapuã, in December, it is raining for 27.7 days, with typically 183mm (7.2") of accumulated precipitation. Throughout the year, there are 204.1 rainfall days, and 1207mm (47.52") of precipitation is accumulated.

Daylight

The month with the longest days in Irapuã, Brazil, is December, with an average of 13h and 24min of daylight.
On the first day of December, sunrise is at 05:26 and sunset at 18:47. On the last day of the month, sunrise is at 05:38 and sunset at 19:03 -03.

Sunshine

In December, the average sunshine in Irapuã is 7.6h.

UV index

The months with the highest UV index in Irapuã, Brazil, are January through April, June through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 6 translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.