December weather forecast
Seridó, Brazil

The first month of the summer, December, is also a hot month in Seridó, Brazil, with an average temperature fluctuating between 21.9°C (71.4°F) and 32.1°C (89.8°F).

Temperature

Seridó's average high-temperature in December is a still tropical 32.1°C (89.8°F), indicating a subtle variation from November. Seridó experiences an average low-temperature of 21.9°C (71.4°F) in the month of December.

Heat index

December's mean heat index is calculated to be a sweltering 38°C (100.4°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Seridó, the average relative humidity in December is 62%.

Rainfall

In Seridó, Brazil, in December, during 7.7 rainfall days, 12mm (0.47") of precipitation is typically accumulated. Throughout the year, there are 137.8 rainfall days, and 433mm (17.05") of precipitation is accumulated.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year in Seridó.
On the first day of December in Seridó, sunrise is at 05:00 and sunset at 17:29. On the last day of the month, sunrise is at 05:13 and sunset at 17:44 -03.

Sunshine

In Seridó, the average sunshine in December is 8.9h.

UV index

January through March, September through December, with an average maximum UV index of 7, are months with the highest UV index in Seridó. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 7 in December translates into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.