December weather forecast
Dégrad Yaya, French Guiana

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

Temperature

Dégrad Yaya's shift into December is marked by a subtle change to a still hot 30.9°C (87.6°F) from November's 33.8°C (92.8°F) in temperature. An average nighttime temperature of 21.1°C (70°F) is noted in Dégrad Yaya, French Guiana, during the month of December.

Heat index

In December, the average heat index is appraised at a blistering 43°C (109.4°F). Stay wary: Heat exhaustion and heat cramps are possible. Heatstroke can ensue from extended effort.
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 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In December, the average relative humidity in Dégrad Yaya is 86%.

Rainfall

In December, the rain falls for 28.1 days. Throughout December, 106mm (4.17") of precipitation is accumulated. In Dégrad Yaya, during the entire year, the rain falls for 259.6 days and collects up to 915mm (36.02") of precipitation.

Daylight

December has the shortest days of the year in Dégrad Yaya, with an average of 11h and 54min of daylight.
On the first day of the month, sunrise is at 06:30 and sunset at 18:22. On the last day of December, sunrise is at 06:44 and sunset at 18:36 -03.

Sunshine

In Dégrad Yaya, the average sunshine in December is 5.9h.

UV index

December is the month with the lowest UV index in Dégrad Yaya, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 5 in December leads to these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.