September weather forecast
Kouachinana, French Guiana

The first month of the autumn, September, is still a tropical month in Kouachinana, French Guiana, with an average temperature ranging between max 32.7°C (90.9°F) and min 22.5°C (72.5°F).

Temperature

The arrival of September is marked by an average high-temperature of a still hot 32.7°C (90.9°F), bearing a close resemblance to August. During the month of September, the temperature falls to an average of 22.5°C (72.5°F).

Heat index

In September, the average heat index is calculated to be a life-threatening hot 47°C (116.6°F). Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. 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 particularly relevant to children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in September in Kouachinana is 79%.

Rainfall

In Kouachinana, during September, the rain falls for 11.5 days and regularly aggregates up to 26mm (1.02") of precipitation. Throughout the year, in Kouachinana, French Guiana, there are 253 rainfall days, and 878mm (34.57") of precipitation is accumulated.

Daylight

In Kouachinana, the average length of the day in September is 12h and 9min.
On the first day of September, sunrise is at 06:27 and sunset at 18:41. On the last day of the month, sunrise is at 06:22 and sunset at 18:26 -03.

Sunshine

September has the most sunshine of the year, with an average of 9.1h of sunshine.

UV index

The months with the highest UV index in Kouachinana are July through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 7 in September leads to these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.