September weather forecastGuiléré, Guinea
September
Weather in September
September, the first month of the autumn in Guiléré, is a tropical month, with an average temperature ranging between max 30°C (86°F) and min 22.9°C (73.2°F).Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a hot 30°C (86°F) from August's 28.7°C (83.7°F). Throughout the month of September, Guiléré sees a steady low-temperature average of 22.9°C (73.2°F).Heat index
In September, the average heat index is appraised at a blistering 40°C (104°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.Data suggests that the heat index is set for environments in shade and with a 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 'feels like' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
In Guiléré, the average relative humidity in September is 88%.Rainfall
In Guiléré, during September, the rain falls for 27.9 days and regularly aggregates up to 205mm (8.07") of precipitation. Throughout the year, there are 165.4 rainfall days, and 1099mm (43.27") of precipitation is accumulated.Daylight
In Guiléré, the average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 06:47 and sunset at 19:06. On the last day of September, sunrise is at 06:45 and sunset at 18:47 GMT.
Sunshine
In September, the average sunshine in Guiléré is 6.3h.UV index
The months with the highest UV index are January through May, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Deflect overexposure. Sun protection is a necessity. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Guiléré, Guinea
- Average high temperature in September: 30°C
The warmest month (with the highest average high temperature) is March (39.3°C).
The month with the lowest average high temperature is August (28.7°C).
- Average low temperature in September: 22.9°C
The month with the highest average low temperature is June (24.3°C).
The coldest month (with the lowest average low temperature) is February (18.8°C).
Average pressure in September
Guiléré, Guinea
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is July (1013.5mbar).
The months with the lowest atmospheric pressure are March and April (1010.3mbar).
Average wind speed in September
Guiléré, Guinea
- Average wind speed in September: 5.7km/h
The windiest month (with the highest average wind speed) is May (8km/h).
The calmest month (with the lowest average wind speed) is November (4.5km/h).
Average humidity in September
Guiléré, Guinea
- Average humidity in September: 88%
The month with the highest relative humidity is August (89%).
The month with the lowest relative humidity is January (44%).
Average rainfall in September
Guiléré, Guinea
- Average rainfall in September: 205mm
The wettest month (with the highest rainfall) is August (367mm).
The driest months (with the least rainfall) are January and February (0mm).
Average rainfall days in September
Guiléré, Guinea
- Average rainfall days in September: 27.9 days
The month with the highest number of rainy days is August (29.8 days).
The month with the least rainy days is January (0 days).
Average daylight in September /
Average sunshine in September
Guiléré, Guinea
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 6h and 18min
The months with the most sunshine are January, February and March (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 4h and 36min).
Average sunshine days in September
Guiléré, Guinea
- Average sunshine days in September: 1.2 days
The month with the most sunshine days is January (30.5 days).
The month with the least sunshine days is August (1 days).
Average UV index in September
Guiléré, Guinea
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, September, October, November and December (UV index 7).
The months with the lowest UV index are June, July and August (UV index 6).
Average cloud cover in September
Guiléré, Guinea
- Average cloud cover in September: 60
The month with the most cloud cover is August (Cloud cover 72).
The months with the least cloud cover are February and March (Cloud cover 9).
Average visibility in September
Guiléré, Guinea
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April, May and December (10km).
The months with the lowest visibility are August and September (7km).
