August weather forecast
Barthélemy, French Guiana

August in Barthélemy features even lower rainfall levels, dropping to 68mm (2.68"), a significant decrease from July. Simultaneously, the city catches a break from the intense humidity with the relative humidity descending to 78%. Despite these changes, Barthélemy's tropical climate endures due to the comfortable temperature range and the generous amount of daylight. Wind speed inches upwards, providing a refreshing breeze that helps alleviate the warmth. Consequently, Barthélemy's weather in August reflects a dry phase within its usual tropical climate framework.

Temperature

Barthélemy's entry into August measures an average high-temperature of a tropical 30.9°C (87.6°F), closely parallel to the preceding month. August brings an average low-temperature of 23.9°C (75°F) to Barthélemy.

Heat index

The heat index value during August is evaluated at a scorching 40°C (104°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in August is 78%.

Rainfall

In Barthélemy, in August, it is raining for 19.2 days, with typically 68mm (2.68") of accumulated precipitation. Throughout the year, there are 277 rainfall days, and 1707mm (67.2") of precipitation is accumulated.

Daylight

In August, the average length of the day is 12h and 15min.
On the first day of August in Barthélemy, sunrise is at 06:27 and sunset at 18:45. On the last day of the month, sunrise is at 06:24 and sunset at 18:36 -03.

Sunshine

The average sunshine in August is 8.8h.

UV index

The months with the highest UV index in Barthélemy are June through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: During August, 7 as the daily maximum UV index converts into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.