December weather forecast
Dardanelles, French Guiana

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

Temperature

As December commences, the average high-temperature subtly reduces, transitioning from a hot 33°C (91.4°F) in November to a moderately hot 29.8°C (85.6°F). Dardanelles in December experiences a low-temperature average of 22°C (71.6°F).

Heat index

In December, the heat index is evaluated at a sweltering 39°C (102.2°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Heat index determinations are made taking into account the shade and light air movements. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

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

Rainfall

In Dardanelles, during December, the rain falls for 25.1 days and regularly aggregates up to 146mm (5.75") of precipitation. 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 06:22 and sunset at 18:17. On the last day of December, sunrise is at 06:36 and sunset at 18:31 -03.

Sunshine

In Dardanelles, the average sunshine in December is 5.9h.

UV index

The months with the lowest UV index in Dardanelles, French Guiana, are January through July, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In December, the maximum UV index of 6 transforms into these recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.