December weather forecast
Bois Couronné, French Guiana

December brings the climatic conditions of Bois Couronné a full circle. The end of the year sees a stable blend of heat, humidity, and rainfall similar to the year-start. The month offers a more relaxed tropical mood than the relatively warmer November, making it an ideal time for outdoor activities. With rainfall measures hitting 84mm (3.31"), the city encounters an increase in precipitation from the previous month. The weather cycle in Bois Couronné thus concludes, ready to begin anew in January.

Temperature

The beginning of December in Bois Couronné reveals an average high-temperature of a still hot 30.2°C (86.4°F), showing minimal deviation from the previous month. Bois Couronné's nights in December cool down to an average low-temperature of 22.7°C (72.9°F).

Heat index

December's mean heat index is estimated at a fiery hot 39°C (102.2°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
The heat index's values are generally associated with conditions in shade and light breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The average relative humidity in December in Bois Couronné is 83%.

Rainfall

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

Daylight

With an average of 11h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:28 and sunset at 18:19. On the last day of December, in Bois Couronné, French Guiana, sunrise is at 06:42 and sunset at 18:33 -03.

Sunshine

The average sunshine in December is 6.6h.

UV index

The months with the lowest UV index are January through June and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 6 translates into the following recommendations:
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. Experience reduced UV exposure by about half when donning a wide-brim hat.