September weather forecast
Edwin, French Guiana

September, the first month of the autumn in Edwin, is still a tropical month, with temperature in the range of an average high of 34.3°C (93.7°F) and an average low of 21.1°C (70°F).

Temperature

As September takes its course, Edwin's average high-temperature registers at a still tropical 34.3°C (93.7°F), closely aligning with the preceding month. Significant variation from daytime temperatures marks September, with the month recording a nightly average of 21.1°C (70°F).

Heat index

September's average heat index is computed to be a blazing hot 51°C (123.8°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 highly critical to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Edwin, French Guiana, the average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall in Edwin. Rain falls for 10.3 days and accumulates 18mm (0.71") of precipitation.

Daylight

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 18:41. On the last day of September, sunrise is at 06:22 and sunset at 18:27 -03.

Sunshine

The month with the most sunshine in Edwin is September, with an average of 9.1h of sunshine.

UV index

The months with the highest UV index are July through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 in September translates into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.