Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The advent of September signifies a minor shift to an average high-temperature of a still tropical 33.6°C (92.5°F), aligning closely with August. Maman Koumarou experiences an average low-temperature of 22°C (71.6°F) in month of September.Heat index
The heat index in September is estimated at a life-threatening hot 48°C (118.4°F). Be prepared: Heat cramps and heat exhaustion are probable. Continued activity may lead to heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
In Maman Koumarou, the average relative humidity in September is 76%.Rainfall
In Maman Koumarou, in September, during 11.8 rainfall days, 21mm (0.83") of precipitation is typically accumulated. Throughout the year, in Maman Koumarou, there are 280.4 rainfall days, and 1281mm (50.43") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 8min.On the first day of September in Maman Koumarou, sunrise is at 06:22 and sunset at 18:34. On the last day of the month, sunrise is at 06:16 and sunset at 18:21 -03.
Sunshine
With an average of 8.8h of sunshine, September has the most sunshine of the year.UV index
The months with the highest UV index in Maman Koumarou, French Guiana, are July through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, a regular UV index of 7 translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Maman Koumarou in September?
What is the average humidity in September in Maman Koumarou?
How much does it rain in Maman Koumarou in September?
What is the average length of the day in September in Maman Koumarou?
What time are sunrise and sunset in September in Maman Koumarou?
What month has the most sunshine in Maman Koumarou?
How long on average sun shines in September in Maman Koumarou?
When is the highest UV index in Maman Koumarou?
What is the UV index reading in September in Maman Koumarou?
Average temperature in September
Maman Koumarou, French Guiana
- Average high temperature in September: 33.6°C
The warmest month (with the highest average high temperature) is October (33.9°C).
The month with the lowest average high temperature is February (27.8°C).
- Average low temperature in September: 22°C
The month with the highest average low temperature is April (22.5°C).
The coldest month (with the lowest average low temperature) is July (21.5°C).
Average pressure in September
Maman Koumarou, French Guiana
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in September
Maman Koumarou, French Guiana
- Average wind speed in September: 6.1km/h
The windiest month (with the highest average wind speed) is October (6.2km/h).
The calmest month (with the lowest average wind speed) is June (4.3km/h).
Average humidity in September
Maman Koumarou, French Guiana
- Average humidity in September: 76%
The month with the highest relative humidity is May (91%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Maman Koumarou, French Guiana
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is May (215mm).
The driest month (with the least rainfall) is October (20mm).
Average rainfall days in September
Maman Koumarou, French Guiana
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is October (10.9 days).
Average daylight in September /
Average sunshine in September
Maman Koumarou, French Guiana
- Average daylight in September: 12h and 1min
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: 8h and 5min
The month with the most sunshine is September (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Maman Koumarou, French Guiana
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is April (0.5 days).
Average UV index in September
Maman Koumarou, 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 months with the lowest UV index are January, February, March, April, May, June and December (UV index 6).
Average cloud cover in September
Maman Koumarou, French Guiana
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is October (Cloud cover 45).
Average visibility in September
Maman Koumarou, French Guiana
- Average visibility in September: 7km
The months with the highest visibility are September, October and November (7km).
The months with the lowest visibility are January, February, March, April, May, June, July, August and December (6km).
Maman Koumarou, French Guiana
Weather forecast for your location
2. Allow the app to use your location