September weather forecastKoaté, Guinea
September
Weather in September
September, the first month of the autumn in Koaté, is also a moderately hot month, with temperature in the range of an average low of 20.8°C (69.4°F) and an average high of 29.3°C (84.7°F).Temperature
September records an average high-temperature of a still moderately hot 29.3°C (84.7°F), indicating a minor variation from the preceding month. Koaté's nighttime temperature during September is consistently averaged at an agreeable 20.8°C (69.4°F).Heat index
The heat index for September is evaluated at a fiery hot 37°C (98.6°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
In September, the average relative humidity is 87%.Rainfall
In Koaté, in September, it is raining for 25.8 days, with typically 126mm (4.96") of accumulated precipitation. In Koaté, during the entire year, the rain falls for 154.5 days and collects up to 814mm (32.05") of precipitation.Daylight
In September, the average length of the day is 12h and 11min.On the first day of the month, sunrise is at 06:27 and sunset at 18:46. On the last day of September, sunrise is at 06:25 and sunset at 18:27 GMT.
Sunshine
In September, the average sunshine is 7.8h.UV index
The months with the lowest UV index are July through September and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 6 translates into these guidelines:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun 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
Average temperature in September
Koaté, Guinea
- Average high temperature in September: 29.3°C
The warmest month (with the highest average high temperature) is March (39.4°C).
The month with the lowest average high temperature is August (28.3°C).
- Average low temperature in September: 20.8°C
The month with the highest average low temperature is April (25.3°C).
The coldest month (with the lowest average low temperature) is January (18.1°C).
Average pressure in September
Koaté, Guinea
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is July (1013.4mbar).
The month with the lowest atmospheric pressure is April (1009.4mbar).
Average wind speed in September
Koaté, Guinea
- Average wind speed in September: 5.3km/h
The windiest month (with the highest average wind speed) is May (8.2km/h).
The calmest months (with the lowest average wind speed) are October and November (4.9km/h).
Average humidity in September
Koaté, Guinea
- Average humidity in September: 87%
The month with the highest relative humidity is August (89%).
The month with the lowest relative humidity is January (19%).
Average rainfall in September
Koaté, Guinea
- Average rainfall in September: 126mm
The wettest month (with the highest rainfall) is August (213mm).
The driest month (with the least rainfall) is December (0mm).
Average rainfall days in September
Koaté, Guinea
- Average rainfall days in September: 25.8 days
The month with the highest number of rainy days is August (28 days).
The month with the least rainy days is December (0 days).
Average daylight in September /
Average sunshine in September
Koaté, Guinea
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 7h and 48min
The months with the most sunshine are February and December (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 0min).
Average sunshine days in September
Koaté, Guinea
- Average sunshine days in September: 2.7 days
The month with the most sunshine days is December (30.9 days).
The month with the least sunshine days is July (1.9 days).
Average UV index in September
Koaté, Guinea
- Average UV index in September: 6
The months with the highest UV index are March and April (UV index 8).
The months with the lowest UV index are July, August, September and December (UV index 6).
Average cloud cover in September
Koaté, Guinea
- Average cloud cover in September: 49
The month with the most cloud cover is August (Cloud cover 65).
The month with the least cloud cover is December (Cloud cover 6).
Average visibility in September
Koaté, Guinea
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The months with the lowest visibility are August and September (7km).





