December weather forecast
Dégrad Neuf, French Guiana

The first month of the winter, December, is also a moderately hot month in Dégrad Neuf, French Guiana, with an average temperature fluctuating between 24.5°C (76.1°F) and 28.8°C (83.8°F).

Temperature

December brings an average high-temperature of a warm 28.8°C (83.8°F), nearly identical to the preceding month. Dégrad Neuf maintains a near steady average temperature of 24.5°C (76.1°F) during the nights of December, demonstrating little drop from daytime highs.

Heat index

In December, the heat index is calculated to be a fiery hot 35°C (95°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. 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 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in December in Dégrad Neuf is 83%.

Rainfall

In December, the rain falls for 25.2 days. Throughout December, 204mm (8.03") of precipitation is accumulated. In Dégrad Neuf, French Guiana, during the entire year, the rain falls for 277 days and collects up to 1707mm (67.2") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 54min of daylight.
On the first day of December, sunrise is at 06:23 and sunset at 18:16. On the last day of the month, sunrise is at 06:38 and sunset at 18:30 -03.

Sunshine

In December, the average sunshine is 7.3h.

UV index

January through May and December, with an average maximum UV index of 6, are months with the lowest UV index in Dégrad Neuf. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.