December weather forecast
Carbets, French Guiana

December, the first month of the winter in Carbets, is still a hot month, with an average temperature varying between 20.9°C (69.6°F) and 30.8°C (87.4°F).

Temperature

December reveals a small adjustment in temperature, transitioning from an average high of a tropical 34°C (93.2°F) in November to a still hot 30.8°C (87.4°F). During the month of December, an average temperature of 20.9°C (69.6°F) is noted during the nights in Carbets.

Heat index

In December, the average heat index is estimated at a blistering 42°C (107.6°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
When referencing the heat index, its values are suitable for shady environments and 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 'apparent temperature' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In December, the average relative humidity is 85%.

Rainfall

In December, in Carbets, the rain falls for 26.2 days. Throughout December, 112mm (4.41") of precipitation is accumulated. Throughout the year, there are 265.5 rainfall days, and 1078mm (42.44") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Carbets, with an average of 11h and 54min of daylight.
On the first day of December, sunrise is at 06:26 and sunset at 18:22. On the last day of the month, sunrise is at 06:40 and sunset at 18:36 -03.

Sunshine

In Carbets, the average sunshine in December is 5.6h.

UV index

January, March and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 5 in December leads to these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.