September weather forecastBossou, Guinea
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Bossou, Guinea, with an average temperature fluctuating between 20°C (68°F) and 27.4°C (81.3°F).Temperature
September commences with an average high-temperature of a still warm 27.4°C (81.3°F), showing little deviation from August's 26.1°C (79°F). In the month of September, the temperature generally rests at an average low of 20°C (68°F).Heat index
The heat index value for September is calculated to be a tropical 32°C (89.6°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
August and September, with an average relative humidity of 92%, are the most humid months in Bossou.Rainfall
September is the month with the most rainfall. Rain falls for 29.8 days and accumulates 250mm (9.84") of precipitation.Daylight
In Bossou, the average length of the day in September is 12h and 10min.On the first day of the month, sunrise is at 06:26 and sunset at 18:41. On the last day of September, sunrise is at 06:22 and sunset at 18:25 GMT.
Sunshine
In September, the average sunshine is 5.4h.UV index
May through September, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bossou, Guinea
- Average high temperature in September: 27.4°C
The warmest month (with the highest average high temperature) is February (34.7°C).
The month with the lowest average high temperature is August (26.1°C).
- Average low temperature in September: 20°C
The months with the highest average low temperature are April and May (21.3°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in September
Bossou, Guinea
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is July (1014.5mbar).
The months with the lowest atmospheric pressure are February and March (1010.8mbar).
Average wind speed in September
Bossou, Guinea
- Average wind speed in September: 4.5km/h
The windiest month (with the highest average wind speed) is August (5.7km/h).
The calmest months (with the lowest average wind speed) are October and November (3.8km/h).
Average humidity in September
Bossou, Guinea
- Average humidity in September: 92%
The months with the highest relative humidity are August and September (92%).
The month with the lowest relative humidity is January (47%).
Average rainfall in September
Bossou, Guinea
- Average rainfall in September: 250mm
The wettest month (with the highest rainfall) is September (250mm).
The driest month (with the least rainfall) is December (3mm).
Average rainfall days in September
Bossou, Guinea
- Average rainfall days in September: 29.8 days
The month with the highest number of rainy days is August (30.5 days).
The month with the least rainy days is December (3 days).
Average daylight in September /
Average sunshine in September
Bossou, Guinea
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in September: 5h and 24min
The months with the most sunshine are January and December (Average sunshine: 9h and 48min).
The month with the least sunshine is August (Average sunshine: 3h and 48min).
Average sunshine days in September
Bossou, Guinea
- Average sunshine days in September: 0.1 days
The month with the most sunshine days is December (26.7 days).
The month with the least sunshine days is September (0.1 days).
Average UV index in September
Bossou, Guinea
- Average UV index in September: 5
The months with the highest UV index are January, February and March (UV index 7).
The months with the lowest UV index are May, June, July, August and September (UV index 5).
Average cloud cover in September
Bossou, Guinea
- Average cloud cover in September: 76
The month with the most cloud cover is August (Cloud cover 84).
The month with the least cloud cover is December (Cloud cover 14).
Average visibility in September
Bossou, Guinea
- Average visibility in September: 6km
The months with the highest visibility are January, February and December (9km).
The months with the lowest visibility are May, June, July, August, September and October (6km).
