December weather forecast
Polydor, French Guiana

The first month of the winter, December, is also a moderately hot month in Polydor, French Guiana, with temperature in the range of an average high of 29.8°C (85.6°F) and an average low of 22°C (71.6°F).

Temperature

In December, the meteorological conditions change slightly, with the average high-temperature moving from a tropical 33°C (91.4°F) in November to a moderately hot 29.8°C (85.6°F). Polydor reports an average low-temperature of 22°C (71.6°F) during the nights of December.

Heat index

The heat index in December is estimated at a fiery hot 39°C (102.2°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The average relative humidity in December is 86%.

Rainfall

In Polydor, in December, it is raining for 25.1 days, with typically 146mm (5.75") of accumulated 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 December in Polydor, sunrise is at 06:20 and sunset at 18:17. On the last day of the month, sunrise is at 06:34 and sunset at 18:31 -03.

Sunshine

In Polydor, French Guiana, the average sunshine in December is 5.9h.

UV index

January through July, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Polydor. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, a daily UV index of 6 turns into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.