December weather forecast
Saul, French Guiana

Closing out the year, December firmly realigns with the weather mood set in the first quarter. Rainfall increases to 112mm (4.41"), and relative humidity reaches 85%. The number of sunlit hours reduces, matching the level seen at the year's start. Saul's weather in December gravitates towards a cooler range. A reversion back to the moisture-rich, rain-heavy weather marks the full circle of Saul's climatic journey over the year.

Temperature

A minor decrease in the average high-temperature is observed in Saul during December, shifting from a hot 34°C (93.2°F) in November to a still tropical 30.8°C (87.4°F). In the month of December, an average of 20.9°C (69.6°F) marks the low-temperature.

Heat index

Throughout December, the heat index is computed to be an extremely hot 42°C (107.6°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

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

Rainfall

In Saul, in December, it is raining for 26.2 days, with typically 112mm (4.41") of accumulated precipitation. 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 Saul, with an average of 11h and 54min of daylight.
On the first day of December in Saul, French Guiana, sunrise is at 06:25 and sunset at 18:19. On the last day of the month, sunrise is at 06:39 and sunset at 18:33 -03.

Sunshine

In Saul, 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 moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 5 translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.