December weather forecast
Natuba, Brazil

The first month of the summer, December, is also a hot month in Natuba, Brazil, with an average temperature fluctuating between 30.6°C (87.1°F) and 22.1°C (71.8°F).

Temperature

The transition into December shows a subtle variation to a still hot 30.6°C (87.1°F) from November's 30.3°C (86.5°F) in the average high-temperature. Natuba, during December, witnesses an average low-temperature of 22.1°C (71.8°F).

Heat index

The average heat index in December is estimated at a very hot 37°C (98.6°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

December is the least humid month, with an average relative humidity of 73%.

Rainfall

In Natuba, during December, the rain falls for 16.8 days and regularly aggregates up to 19mm (0.75") of precipitation. Throughout the year, in Natuba, Brazil, there are 224.2 rainfall days, and 433mm (17.05") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 36min of daylight.
On the first day of December in Natuba, sunrise is at 04:55 and sunset at 17:27. On the last day of the month, sunrise is at 05:08 and sunset at 17:42 -03.

Sunshine

In Natuba, the average sunshine in December is 6.8h.

UV index

The average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 6 in December transforms into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Stay sun-safe with clothing that is both closely woven and worn loosely.