December weather forecast
Oiapoque, Brazil

December, the first month of the winter in Oiapoque, is still a warm month, with an average temperature ranging between min 22°C (71.6°F) and max 29.8°C (85.6°F).

Temperature

December signals a slight drop in average high-temperature, sliding from November's tropical 33°C (91.4°F) to a warm 29.8°C (85.6°F). Oiapoque, during December, witnesses an average low-temperature of 22°C (71.6°F).

Heat index

Throughout December, the heat index is evaluated at a fiery hot 39°C (102.2°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Note that heat index values are valued for light wind and location in the shade. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in December in Oiapoque, Brazil, is 86%.

Rainfall

In Oiapoque, in December, during 25.1 rainfall days, 146mm (5.75") of precipitation is typically accumulated. Throughout the year, there are 270.6 rainfall days, and 1131mm (44.53") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 11h and 54min of daylight.
On the first day of the month, sunrise is at 06:19 and sunset at 18:14. On the last day of December, in Oiapoque, Brazil, sunrise is at 06:33 and sunset at 18:27 -03.

Sunshine

In Oiapoque, Brazil, the average sunshine in December is 5.9h.

UV index

The months with the lowest UV index in Oiapoque, Brazil, are January through July, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 6 in December transforms into this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.