December weather forecast
Dégrad Dimanche, French Guiana

The first month of the winter, December, is still a hot month in Dégrad Dimanche, French Guiana, with an average temperature varying between 22.7°C (72.9°F) and 30.2°C (86.4°F).

Temperature

Dégrad Dimanche experiences a transition to a still hot 30.2°C (86.4°F) in average high-temperatures with the arrival of December, not greatly differing from November's 32.4°C (90.3°F). Dégrad Dimanche's temperature drops to an average low of 22.7°C (72.9°F) during the nights of December.

Heat index

Throughout December, the heat index is computed to be a sweltering 39°C (102.2°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The average relative humidity in December in Dégrad Dimanche, French Guiana, is 83%.

Rainfall

In Dégrad Dimanche, during December, the rain falls for 21.9 days and regularly aggregates up to 84mm (3.31") of precipitation. In Dégrad Dimanche, during the entire year, the rain falls for 253 days and collects up to 878mm (34.57") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 48min of daylight.
On the first day of the month, sunrise is at 06:27 and sunset at 18:19. On the last day of December, in Dégrad Dimanche, sunrise is at 06:42 and sunset at 18:32 -03.

Sunshine

The average sunshine in December is 6.6h.

UV index

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index in Dégrad Dimanche. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 6 transforms into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Boost your sun resistance with garments that are densely woven yet spacious.