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
September's presence marks an average high-temperature of a still moderately hot 28°C (82.4°F), subtly varied from August's 26.8°C (80.2°F). In Yanfou, September's nights observe an average temperature dip to a pleasant 20.8°C (69.4°F).Heat index
In September, the heat index is estimated at a tropical 34°C (93.2°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Given the heat index, its values are aligned with shaded sites and gentle winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in September in Yanfou is 92%.Rainfall
In Yanfou, during September, the rain falls for 29.7 days and regularly aggregates up to 254mm (10") of precipitation. In Yanfou, Guinea, during the entire year, the rain falls for 209.7 days and collects up to 1688mm (66.46") of precipitation.Daylight
The average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 06:42 and sunset at 19:00. On the last day of September, sunrise is at 06:40 and sunset at 18:42 GMT.
Sunshine
The average sunshine in September in Yanfou is 5.7h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 6 in September translates into these instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Yanfou in September?
What is the average humidity in September in Yanfou?
How many days does it rain in September in Yanfou?
How many hours of daylight does Yanfou have in September?
When are sunrise and sunset in September in Yanfou?
How many hours of sunshine does Yanfou have in September?
What is the UV index reading in September in Yanfou?
Average temperature in September
Yanfou, Guinea
- Average high temperature in September: 28°C
The warmest month (with the highest average high temperature) is March (39.2°C).
The month with the lowest average high temperature is August (26.8°C).
- Average low temperature in September: 20.8°C
The month with the highest average low temperature is May (22.8°C).
The coldest month (with the lowest average low temperature) is January (18.1°C).
Average pressure in September
Yanfou, Guinea
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is July (1014mbar).
The months with the lowest atmospheric pressure are March and April (1010.5mbar).
Average wind speed in September
Yanfou, Guinea
- Average wind speed in September: 4km/h
The windiest month (with the highest average wind speed) is April (5.5km/h).
The calmest month (with the lowest average wind speed) is October (3.4km/h).
Average humidity in September
Yanfou, Guinea
- Average humidity in September: 92%
The month with the highest relative humidity is August (94%).
The month with the lowest relative humidity is January (43%).
Average rainfall in September
Yanfou, Guinea
- Average rainfall in September: 254mm
The wettest month (with the highest rainfall) is August (436mm).
The driest months (with the least rainfall) are January and February (1mm).
Average rainfall days in September
Yanfou, Guinea
- Average rainfall days in September: 29.7 days
The month with the highest number of rainy days is August (30.8 days).
The month with the least rainy days is February (0.8 days).
Average daylight in September /
Average sunshine in September
Yanfou, Guinea
- Average daylight in September: 12h and 1min
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: 5h and 4min
The months with the most sunshine are January, February, March and December (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 3h and 48min).
Average sunshine days in September
Yanfou, Guinea
- Average sunshine days in September: 0.1 days
The month with the most sunshine days is January (29.7 days).
The months with the least sunshine days are August and September (0.1 days).
Average UV index in September
Yanfou, Guinea
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April and November (UV index 7).
The months with the lowest UV index are July and August (UV index 5).
Average cloud cover in September
Yanfou, Guinea
- Average cloud cover in September: 71
The month with the most cloud cover is August (Cloud cover 82).
The month with the least cloud cover is February (Cloud cover 9).
Average visibility in September
Yanfou, Guinea
- Average visibility in September: 6km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are July, August and September (6km).
Yanfou, Guinea
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