June weather forecast
Certitude, French Guiana

The first month of the summer, June, is a tropical month in Certitude, French Guiana, with an average temperature varying between 21.1°C (70°F) and 30.3°C (86.5°F).

Temperature

Certitude sees the arrival of June with an average high-temperature of a tropical 30.3°C (86.5°F), indicating a subtle variation from May. Certitude's average low-temperature in June is measured at an agreeable 21.1°C (70°F).

Heat index

The heat index in June is estimated at a scorching 41°C (105.8°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Given the heat index, its values are aligned with shaded sites and gentle winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. 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 June in Certitude, French Guiana, is 88%.

Rainfall

In Certitude, in June, it is raining for 24.5 days, with typically 123mm (4.84") of accumulated precipitation. In Certitude, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.

Daylight

June has the longest days of the year, with an average of 12h and 18min of daylight.
On the first day of the month, sunrise is at 06:21 and sunset at 18:40. On the last day of June, sunrise is at 06:26 and sunset at 18:47 -03.

Sunshine

The average sunshine in June is 6.6h.

UV index

In Certitude, the average daily maximum UV index in June is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 during June leads to these advisories:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.