June weather forecast
Bienvenue, French Guiana

A transition is observed in June, with a decrease in rainfall, paving the way for the city’s gradual journey from damp conditions towards its drier part of the year. The slight drop in average temperature coupled with a reduced magnitude of rainfall provides for somewhat cooler days. Sunshine hours surpass the city's first half-year mark, promising longer sunny periods. The winds regain momentum, inching towards their previous speed, providing mild relief from the tropical city’s warmth.

Temperature

The commencement of June in Bienvenue notes an average high-temperature of a still warm 29.3°C (84.7°F), exhibiting little difference from the previous month. In June, the recorded average low-temperature is a pleasant 21.8°C (71.2°F).

Heat index

In June, the average heat index is computed to be a fiery hot 38°C (100.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The average relative humidity in June is 89%.

Rainfall

In June, in Bienvenue, the rain falls for 26.6 days. Throughout June, 133mm (5.24") of precipitation is accumulated. Throughout the year, there are 270.6 rainfall days, and 1131mm (44.53") of precipitation is accumulated.

Daylight

June has the longest days of the year in Bienvenue, with an average of 12h and 18min of daylight.
On the first day of the month, sunrise is at 06:20 and sunset at 18:37. On the last day of June, in Bienvenue, sunrise is at 06:25 and sunset at 18:43 -03.

Sunshine

In Bienvenue, the average sunshine in June is 6.8h.

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 health risk from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 6 in June transforms into this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.