December weather forecast
Muaná, Brazil

December, the first month of the summer in Muaná, is still a tropical month, with an average temperature fluctuating between 32°C (89.6°F) and 23.8°C (74.8°F).

Temperature

December's weather displays an average high-temperature of a still tropical 32°C (89.6°F), slightly varied from November's 33.8°C (92.8°F). Nightly temperatures drop to an average low of 23.8°C (74.8°F) in December.

Heat index

For December, the heat index is evaluated at a scorching 44°C (111.2°F). Attention: Heat exhaustion and heat cramps are anticipated. Prolonged effort can result in heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in December in Muaná is 78%.

Rainfall

In Muaná, in December, it is raining for 26.4 days, with typically 151mm (5.94") of accumulated precipitation. In Muaná, during the entire year, the rain falls for 296.8 days and collects up to 1567mm (61.69") of precipitation.

Daylight

With an average of 12h and 12min of daylight, December has the longest days of the year.
On the first day of December in Muaná, sunrise is at 05:59 and sunset at 18:12. On the last day of the month, sunrise is at 06:13 and sunset at 18:26 -03.

Sunshine

The average sunshine in December in Muaná is 7.8h.

UV index

January through March, May through 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 hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 7 in December converts into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.