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

December heralds a minor drop in average high-temperature, sliding from November's 34°C (93.2°F) to a still tropical 30.8°C (87.4°F). Nighttime temperature lowers to an average of 20.9°C (69.6°F) in December.

Heat index

During December, the heat index is computed to be a blisteringly hot 42°C (107.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

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

The month with the shortest days is December, with an average of 11h and 54min of daylight.
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 18:36 -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 reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 5 suggests these recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.