August weather forecast
Mont Valérien, French Guiana

The last month of the summer, August, is a tropical month in Mont Valérien, French Guiana, with an average temperature ranging between max 30.4°C (86.7°F) and min 24.5°C (76.1°F).

Temperature

As July transitions into August, the average high-temperature rests at a hot 30.4°C (86.7°F), maintaining a close resemblance to the previous month. During August, Mont Valérien records an average temperature of 24.5°C (76.1°F) at night.

Heat index

The heat index value during August is computed to be a torrid 38°C (100.4°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in August in Mont Valérien is 78%.

Rainfall

In Mont Valérien, in August, during 20.9 rainfall days, 71mm (2.8") of precipitation is typically accumulated. Throughout the year, there are 288 rainfall days, and 1773mm (69.8") of precipitation is accumulated.

Daylight

The average length of the day in August is 12h and 16min.
On the first day of the month, sunrise is at 06:28 and sunset at 18:48. On the last day of August, in Mont Valérien, sunrise is at 06:26 and sunset at 18:38 -03.

Sunshine

In August, the average sunshine in Mont Valérien is 8.9h.

UV index

The months with the highest UV index in Mont Valérien are July through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.