December weather forecast
Ponta do Mutá, Brazil

December, the first month of the summer in Ponta do Mutá, is a tropical month, with an average temperature fluctuating between 30.4°C (86.7°F) and 19.5°C (67.1°F).

Temperature

The start of December sees the average high-temperature at a tropical 30.4°C (86.7°F), showing little difference from November's 29.1°C (84.4°F). During December, the temperature tends to dip to an average of 19.5°C (67.1°F) at night.

Heat index

The heat index value for December is calculated to be a scorching 40°C (104°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. 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. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in December in Ponta do Mutá is 82%.

Rainfall

In Ponta do Mutá, Brazil, in December, it is raining for 19 days, with typically 55mm (2.17") of accumulated precipitation. Throughout the year, in Ponta do Mutá, there are 241.8 rainfall days, and 524mm (20.63") of precipitation is accumulated.

Sea temperature

In Ponta do Mutá, the average seawater temperature in December is 27°C (80.6°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

With an average of 12h and 54min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 04:58 and sunset at 17:51. On the last day of the month, sunrise is at 05:11 and sunset at 18:07 -03.

Sunshine

In December, the average sunshine is 7.5h.

UV index

January through May, September 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 unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Heed this! UV intensity is much stronger when reflected off sand and water.