September weather forecastCafé, French Guiana

Weather in September

September, the first month of the autumn in Café, is still a tropical month, with an average temperature ranging between min 20.5°C (68.9°F) and max 34.1°C (93.4°F).

Temperature

In September, Café notes an average high-temperature of a still tropical 34.1°C (93.4°F), hardly different from the preceding month. September nights bring a pronounced temperature shift, with averages hovering around an agreeable 20.5°C (68.9°F).

Heat index

In September, the average heat index is evaluated at a burning hot 49°C (120.2°F). Stay watchful: Heat exhaustion along with heat cramps are likely. Ongoing effort may cause heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In Café, the average relative humidity in September is 74%.

Rainfall

In Café, in September, during 14.3 rainfall days, 36mm (1.42") of precipitation is typically accumulated. In Café, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.

Daylight

In September, the average length of the day is 12h and 8min.
On the first day of September in Café, sunrise is at 06:29 and sunset at 18:40. On the last day of the month, 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

August through November, with an average maximum UV index of 7, are months with the highest UV index in Café. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 7 suggests this advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.