September weather forecastEdwin, French Guiana
September
Weather in September
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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Edwin, French Guiana
- Average high temperature in September: 34.3°C
The warmest month (with the highest average high temperature) is October (34.8°C).
The month with the lowest average high temperature is February (29.5°C).
- Average low temperature in September: 21.1°C
The month with the highest average low temperature is May (22°C).
The coldest month (with the lowest average low temperature) is January (20.7°C).
Average pressure in September
Edwin, French Guiana
- Average pressure in September: 1011.5mbar
The months with the highest atmospheric pressure are June and July (1012.9mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in September
Edwin, French Guiana
- Average wind speed in September: 5.2km/h
The windiest month (with the highest average wind speed) is March (5.5km/h).
The calmest month (with the lowest average wind speed) is July (4.4km/h).
Average humidity in September
Edwin, French Guiana
- Average humidity in September: 75%
The month with the highest relative humidity is May (90%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Edwin, French Guiana
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is May (171mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in September
Edwin, French Guiana
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is December (28.1 days).
The month with the least rainy days is September (10.3 days).
Average daylight in September /
Average sunshine in September
Edwin, French Guiana
- Average daylight in September: 12h and 6min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is September (Average sunshine: 9h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Edwin, French Guiana
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is February (1.4 days).
Average UV index in September
Edwin, French Guiana
- Average UV index in September: 7
The months with the highest UV index are July, August, September, October and November (UV index 7).
The month with the lowest UV index is December (UV index 5).
Average cloud cover in September
Edwin, French Guiana
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 78).
The month with the least cloud cover is October (Cloud cover 45).
Average visibility in September
Edwin, French Guiana
- Average visibility in September: 7km
The months with the highest visibility are August, September, October and November (7km).
The month with the lowest visibility is May (5km).
