December weather forecast
Bostok, French Guiana

The cool December breeze signals an end to the year in Bostok. Echoing from November, December maintains an average rainfall of 112mm (4.41"), a subtle climb compared to the previous month. However, the month offers an improve on earlier weather trends, tying in nicely with the constant year-round climate conditions. The weather parameters sustain the equilibrium, maintaining steady wind speeds and humidity levels. This continuous trend reflects the city's climate sustainability and balance all year round.

Temperature

With December's onset, the weather in Bostok reveals a slight temperature decrease, transitioning from a hot 34°C (93.2°F) in November to a still tropical 30.8°C (87.4°F). During December, Bostok records an average temperature of 20.9°C (69.6°F) at night.

Heat index

Throughout December, the heat index is computed to be a blisteringly hot 42°C (107.6°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In December, the average relative humidity in Bostok is 85%.

Rainfall

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

Daylight

With an average of 11h and 54min of daylight, December has the shortest days of the year in Bostok.
On the first day of the month, sunrise is at 06:26 and sunset at 18:23. On the last day of December, sunrise is at 06:41 and sunset at 18:37 -03.

Sunshine

In December, the average sunshine is 5.6h.

UV index

The months with the lowest UV index are January, March and December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: During December, 5 as the daily maximum UV index converts into the following advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.