December weather forecastItabaianinha, Brazil

Weather in December

The first month of the summer, December, is also a hot month in Itabaianinha, Brazil, with an average temperature ranging between max 32.3°C (90.1°F) and min 21.2°C (70.2°F).

Temperature

With the onset of December, the average high-temperature registers at a still hot 32.3°C (90.1°F), subtly different from November's 31.5°C (88.7°F). In December, Itabaianinha records an average nighttime temperature of 21.2°C (70.2°F).

Heat index

Throughout December, the heat index is calculated to be an extremely hot 42°C (107.6°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

February, March and December, with an average relative humidity of 72%, are the least humid months in Itabaianinha.

Rainfall

In December, in Itabaianinha, the rain falls for 11.6 days. Throughout December, 34mm (1.34") of precipitation is accumulated. Throughout the year, in Itabaianinha, there are 201.7 rainfall days, and 430mm (16.93") of precipitation is accumulated.

Daylight

With an average of 12h and 48min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 04:58 and sunset at 17:42. On the last day of December, sunrise is at 05:11 and sunset at 17:57 -03.

Sunshine

In December, the average sunshine in Itabaianinha, Brazil, is 7.3h.

UV index

January through March, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In December, a regular UV index of 7 translates into these guidelines:
Inhibit overexposure. Warding off sun damage is of utmost importance. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.