December weather forecast
Organabo, French Guiana

Finally, December brings with it an unmistakable blend of warm temperatures and increased rainfall. The wettest period of the year seems to be on the horizon, as rain falls more frequently compared to the early autumn months. A slight easing in temperatures, the decrease in sunlit hours, and a return to high humidity all signal the onset of the wet season in Organabo. The wind speeds make a subtle climb, adding an invigorating breeze to the now frequent tropical downpours. Indoor activities and weatherproof plans are most suitable for December, given the return of higher rainfall and wetter days.

Temperature

The advent of December in Organabo, French Guiana, brings an average high-temperature of a still tropical 30.2°C (86.4°F), exhibiting minor difference from the previous month. Throughout the month of December, Organabo reports a steady low-temperature average of 22.7°C (72.9°F).

Heat index

December's heat index is evaluated at a very hot 39°C (102.2°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

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

Rainfall

In December, in Organabo, French Guiana, the rain falls for 21.9 days. Throughout December, 84mm (3.31") of precipitation is accumulated. Throughout the year, in Organabo, French Guiana, there are 253 rainfall days, and 878mm (34.57") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 11h and 48min of daylight.
On the first day of the month, sunrise is at 06:28 and sunset at 18:17. On the last day of December, in Organabo, French Guiana, sunrise is at 06:42 and sunset at 18:31 -03.

Sunshine

In Organabo, French Guiana, the average sunshine in December 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 estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a daily UV index of 6 turns into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.