December weather forecast
Biguiston, French Guiana

The first month of the winter, December, is still a tropical month in Biguiston, French Guiana, with an average temperature varying between 22.7°C (72.9°F) and 30.2°C (86.4°F).

Temperature

Biguiston experiences a transition to a still tropical 30.2°C (86.4°F) in average high-temperatures with the arrival of December, not greatly differing from November's 32.4°C (90.3°F). Biguiston's nighttime temperature during December is consistently averaged at a pleasant 22.7°C (72.9°F).

Heat index

During December, the heat index is evaluated at a fiery hot 39°C (102.2°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In Biguiston, the average relative humidity in December is 83%.

Rainfall

In Biguiston, French Guiana, in December, during 21.9 rainfall days, 84mm (3.31") of precipitation is typically accumulated. In Biguiston, during the entire year, the rain falls for 253 days and collects up to 878mm (34.57") of precipitation.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:30 and sunset at 18:20. On the last day of December, in Biguiston, French Guiana, sunrise is at 06:45 and sunset at 18:34 -03.

Sunshine

In December, the average sunshine is 6.6h.

UV index

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 6 in December leads to these recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.