September weather forecast
Dégrad Bois Blanc, French Guiana

The first month of the autumn, September, is still a tropical month in Dégrad Bois Blanc, French Guiana, with an average temperature varying between 20.5°C (68.9°F) and 34.1°C (93.4°F).

Temperature

Dégrad Bois Blanc, French Guiana, transitions into September recording an average high-temperature of a still hot 34.1°C (93.4°F), closely aligning with the preceding month's temperature. The September nights bear witness to a significant drop from the daytime highs, settling at an average temperature of 20.5°C (68.9°F).

Heat index

For September, the heat index is evaluated at a blazing hot 49°C (120.2°F). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In September, the average relative humidity in Dégrad Bois Blanc, French Guiana, is 74%.

Rainfall

In Dégrad Bois Blanc, during September, the rain falls for 14.3 days and regularly aggregates up to 36mm (1.42") of precipitation. In Dégrad Bois Blanc, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.

Daylight

In Dégrad Bois Blanc, the average length of the day in September is 12h and 8min.
On the first day of the month, sunrise is at 06:29 and sunset at 18:40. On the last day of September, sunrise is at 06:22 and sunset at 18:27 -03.

Sunshine

The months with the most sunshine are September and October, with an average of 8.8h of sunshine.

UV index

The months with the highest UV index are August through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 7 during September translates into the following guidance:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.