April weather forecast
Bienvenue, French Guiana

Bienvenue witnesses a surge in rainfall in April as it soars to 142mm (5.59"), ensuring a significant moistening of the city's landscape. The increase in precipitation is balanced with consistent temperatures, marking a stable transition from the preceding month. While average daylight expands by a couple of minutes, the duration of sunshine remains fairly constant, providing a pleasant balance between gloomy and sunny days. As the city endures its wettest month, the wind speed decreases slightly, reducing the effect of cooling breezes on the overall temperature.

Temperature

The advent of April brings an average high-temperature of a still moderately hot 28.8°C (83.8°F), exhibiting minor difference from the previous month. During the month of April, Bienvenue's nighttime temperature lowers to an average of 22.4°C (72.3°F).

Heat index

For most parts of April, the heat index is computed to be a fiery hot 36°C (96.8°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to 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. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in April is 90%.

Rainfall

In Bienvenue, during April, the rain falls for 26.5 days and regularly aggregates up to 142mm (5.59") of precipitation. Throughout the year, there are 270.6 rainfall days, and 1131mm (44.53") of precipitation is accumulated.

Daylight

The average length of the day in April in Bienvenue is 12h and 11min.
On the first day of the month, sunrise is at 06:29 and sunset at 18:38. On the last day of April, in Bienvenue, sunrise is at 06:21 and sunset at 18:34 -03.

Sunshine

In Bienvenue, the average sunshine in April is 4.8h.

UV index

The months with the lowest UV index are January through July, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 6 in April, converts into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.