December weather forecast
Nancibo, French Guiana

December, the first month of the winter in Nancibo, is still a warm month, with an average temperature ranging between max 28.8°C (83.8°F) and min 24.5°C (76.1°F).

Temperature

Nancibo in December witnesses an average high-temperature of a moderately hot 28.8°C (83.8°F), indicating a slight variation from November's 30.8°C (87.4°F). Recording a slight decline in temperature during the nights, Nancibo's December temperatures average at a still warm 24.5°C (76.1°F).

Heat index

Throughout December, the heat index is evaluated at a torrid 35°C (95°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Nancibo, during December, the rain falls for 25.2 days and regularly aggregates up to 204mm (8.03") of precipitation. Throughout the year, in Nancibo, there are 277 rainfall days, and 1707mm (67.2") of precipitation is accumulated.

Daylight

With an average of 11h and 54min of daylight, December has the shortest days of the year.
On the first day of December in Nancibo, sunrise is at 06:23 and sunset at 18:15. On the last day of the month, sunrise is at 06:37 and sunset at 18:28 -03.

Sunshine

In December, the average sunshine is 7.3h.

UV index

The months with the lowest UV index are January through May and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during December leads to these instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.