December weather forecast
Eau Blanche, French Guiana

The first month of the winter, December, is still a hot month in Eau Blanche, French Guiana, with an average temperature ranging between max 30.2°C (86.4°F) and min 22.7°C (72.9°F).

Temperature

December brings an average high-temperature of a still tropical 30.2°C (86.4°F), nearly identical to the preceding month. An average low-temperature of 22.7°C (72.9°F) is noted during the nights in December.

Heat index

Throughout December, the heat index is estimated at a sweltering 39°C (102.2°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The average relative humidity in December is 83%.

Rainfall

In Eau Blanche, in December, during 21.9 rainfall days, 84mm (3.31") of precipitation is typically accumulated. Throughout the year, there are 253 rainfall days, and 878mm (34.57") of precipitation is accumulated.

Daylight

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

Sunshine

The average sunshine in December in Eau Blanche 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 Eau Blanche. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 6 in December leads to these recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.