July weather forecast
Lioni, French Guiana

July, the same as June, in Lioni, French Guiana, is another tropical summer month, with an average temperature varying between 21.1°C (70°F) and 31.3°C (88.3°F).

Temperature

Lioni starts July with an average high-temperature of a still hot 31.3°C (88.3°F), a minor shift from June's 30.4°C (86.7°F). Lioni's average low-temperature in July is measured at a pleasant 21.1°C (70°F).

Heat index

During July, the heat index is computed to be a blisteringly hot 44°C (111.2°F). Remain alert: Heat exhaustion and heat cramps are predicted. Extended effort can lead to heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in July in Lioni is 85%.

Rainfall

In July, the rain falls for 19.8 days. Throughout July, 62mm (2.44") of precipitation is accumulated. Throughout the year, there are 259.6 rainfall days, and 915mm (36.02") of precipitation is accumulated.

Daylight

In July, the average length of the day in Lioni is 12h and 20min.
On the first day of July, sunrise is at 06:30 and sunset at 18:52. On the last day of the month, sunrise is at 06:34 and sunset at 18:52 -03.

Sunshine

In Lioni, the average sunshine in July is 7.9h.

UV index

July through November, with an average maximum UV index of 7, are months with the highest UV index in Lioni, French Guiana. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 7 in July translates into this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.