December weather forecast
Maman Koumarou, French Guiana

December, the first month of the winter in Maman Koumarou, is still a warm month, with temperature in the range of an average low of 22.1°C (71.8°F) and an average high of 29.9°C (85.8°F).

Temperature

December's arrival signals a moderate reduction in the average high-temperature, easing from a tropical 33.1°C (91.6°F) in November to a moderately hot 29.9°C (85.8°F). During the month of December, Maman Koumarou anticipates a mean low-temperature of 22.1°C (71.8°F).

Heat index

The average heat index in December is estimated 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. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Maman Koumarou, French Guiana, the average relative humidity in December is 86%.

Rainfall

In December, the rain falls for 25.3 days. Throughout December, 154mm (6.06") of precipitation is accumulated. In Maman Koumarou, during the entire year, the rain falls for 280.4 days and collects up to 1281mm (50.43") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 54min of daylight.
On the first day of December in Maman Koumarou, sunrise is at 06:21 and sunset at 18:15. On the last day of the month, sunrise is at 06:35 and sunset at 18:28 -03.

Sunshine

In December, the average sunshine is 6h.

UV index

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index in Maman Koumarou. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 6 transforms into these recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.