December weather forecast
Manicoré, Brazil

The first month of the summer, December, is still a tropical month in Manicoré, Brazil, with an average temperature varying between 31.3°C (88.3°F) and 23.2°C (73.8°F).

Temperature

The transition into December shows a subtle variation to a still hot 31.3°C (88.3°F) from November's 33.1°C (91.6°F) in the average high-temperature. Manicoré, during the month of December, experiences an average low-temperature of 23.2°C (73.8°F).

Heat index

The heat index value during December is calculated to be an extremely hot 44°C (111.2°F). Remain alert: Heat exhaustion and heat cramps are predicted. Extended effort can lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for 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. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in December is 86%.

Rainfall

In December, in Manicoré, the rain falls for 27 days. Throughout December, 161mm (6.34") of precipitation is accumulated. Throughout the year, in Manicoré, Brazil, there are 238.6 rainfall days, and 1152mm (45.35") of precipitation is accumulated.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year in Manicoré.
On the first day of December, sunrise is at 05:41 and sunset at 18:07. On the last day of the month, sunrise is at 05:54 and sunset at 18:22 -04.

Sunshine

The average sunshine in December is 7.8h.

UV index

January through April and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 in December converts into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. 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. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.