December weather forecastParintins, Brazil

Weather in December

The first month of the summer, December, is still a hot month in Parintins, Brazil, with an average temperature fluctuating between 23.5°C (74.3°F) and 33.2°C (91.8°F).

Temperature

The advent of December presents an average high-temperature of a tropical 33.2°C (91.8°F), maintaining a close correlation with the preceding month. An average low-temperature of 23.5°C (74.3°F) marks the nights throughout December.

Heat index

During December, the heat index is evaluated at a blazing hot 46°C (114.8°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In Parintins, Brazil, the average relative humidity in December is 74%.

Rainfall

In December, in Parintins, the rain falls for 20.1 days. Throughout December, 75mm (2.95") of precipitation is accumulated. In Parintins, during the entire year, the rain falls for 201.8 days and collects up to 607mm (23.9") of precipitation.

Daylight

The month with the longest days in Parintins is December, with an average of 12h and 18min of daylight.
On the first day of December in Parintins, sunrise is at 05:28 and sunset at 17:44. On the last day of the month, sunrise is at 05:42 and sunset at 17:58 -04.

Sunshine

In December, the average sunshine is 7.5h.

UV index

The average daily maximum UV index in December is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 7 translates into these guidelines:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.