December weather forecast
Élysée, French Guiana

The first month of the winter, December, is also a hot month in Élysée, French Guiana, with an average temperature fluctuating between 30.9°C (87.6°F) and 21.1°C (70°F).

Temperature

Élysée's weather in December, with an average high-temperature of a still tropical 30.9°C (87.6°F), subtly shifts from November's 33.8°C (92.8°F). Élysée, during the month of December, experiences an average low-temperature of 21.1°C (70°F).

Heat index

The heat index for December is computed to be a scorching 43°C (109.4°F). Stay mindful: Heat exhaustion and heat cramps are likely. Heatstroke could follow extended physical effort.
Understanding the heat index involves considering values for shaded locales with light wind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in December in Élysée is 86%.

Rainfall

In Élysée, in December, during 28.1 rainfall days, 106mm (4.17") of precipitation is typically accumulated. Throughout the year, there are 259.6 rainfall days, and 915mm (36.02") of precipitation is accumulated.

Daylight

With an average of 11h and 54min of daylight, December has the shortest days of the year.
On the first day of December in Élysée, French Guiana, sunrise is at 06:29 and sunset at 18:21. On the last day of the month, sunrise is at 06:43 and sunset at 18:35 -03.

Sunshine

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

UV index

December is the month with the lowest UV index, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A daily maximum UV index of 5 in December translates into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.