December weather forecast
Médeyre, French Guiana

December, the first month of the winter in Médeyre, is also a hot month, with temperature in the range of an average low of 22.7°C (72.9°F) and an average high of 30.2°C (86.4°F).

Temperature

December's average high-temperature is a still tropical 30.2°C (86.4°F), maintaining a close comparison with November's 32.4°C (90.3°F). In Médeyre, an average temperature of 22.7°C (72.9°F) is noted during December nights.

Heat index

December's heat index is computed to be a sweltering 39°C (102.2°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

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

Rainfall

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

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year in Médeyre.
On the first day of December, sunrise is at 06:29 and sunset at 18:18. On the last day of the month, sunrise is at 06:43 and sunset at 18:32 -03.

Sunshine

In December, the average sunshine in Médeyre, French Guiana, is 6.6h.

UV index

The months with the lowest UV index in Médeyre are January through June and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 6 during December morphs into the following directions:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.