December weather forecast
Wempi, French Guiana

December marks the cycle end in Wempi's annual weather pattern. It continues to experience mild temperature drops from the previous months, with daytime temperatures dipping to around 30.8°C (87.4°F). Rainfall rises to a substantial 112mm (4.41") as the city begins to usher in the rainy season once again. The change in weather pattern does not hinder outdoor activities as the city still enjoys some sunshine amidst the showers. The cool breeze from the wind announces the end of the year in the heart of the rainforest.

Temperature

In Wempi, entering December brings a subtle temperature decrement, reducing from November's 34°C (93.2°F) to a still tropical 30.8°C (87.4°F). During December, Wempi's temperature falls to a steady low-temperature average of 20.9°C (69.6°F).

Heat index

December's average heat index is appraised at a blisteringly hot 42°C (107.6°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

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

Rainfall

In December, the rain falls for 26.2 days. Throughout December, 112mm (4.41") of precipitation is accumulated. In Wempi, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 54min of daylight.
On the first day of December, sunrise is at 06:26 and sunset at 18:23. On the last day of the month, sunrise is at 06:41 and sunset at 18:36 -03.

Sunshine

In Wempi, the average sunshine in December 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 value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 5 in December translates into these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.