December weather forecast
Barra dos Coqueiros, Brazil

December, the first month of the summer in Barra dos Coqueiros, is a hot month, with an average temperature varying between 30°C (86°F) and 24.7°C (76.5°F).

Temperature

December is marked by an average high-temperature of a tropical 30°C (86°F), almost identical to the preceding month. Throughout December nights, Barra dos Coqueiros experiences a consistent temperature average of 24.7°C (76.5°F).

Heat index

The average heat index in December is appraised at a torrid 36°C (96.8°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. 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

January through March and December, with an average relative humidity of 73%, are the least humid months.

Rainfall

In December, in Barra dos Coqueiros, the rain falls for 10.8 days. Throughout December, 26mm (1.02") of precipitation is accumulated. In Barra dos Coqueiros, during the entire year, the rain falls for 197.6 days and collects up to 586mm (23.07") of precipitation.

Sea temperature

In Barra dos Coqueiros, the average seawater temperature in December is 27.3°C (81.1°F).
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

The month with the longest days in Barra dos Coqueiros is December, with an average of 12h and 48min of daylight.
On the first day of the month, sunrise is at 04:55 and sunset at 17:38. On the last day of December, in Barra dos Coqueiros, sunrise is at 05:08 and sunset at 17:53 -03.

Sunshine

In December, the average sunshine is 8.2h.

UV index

January through May, September through December, with an average maximum UV index of 7, are months with the highest UV index in Barra dos Coqueiros. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In December, the UV index of 7 transforms into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Caution! The Sun's UV intensity grows with reflections off sand and water.