September weather forecastBona, Senegal
September
Weather in September
September, the first month of the autumn in Bona, is still a tropical month, with an average temperature fluctuating between 24.5°C (76.1°F) and 31.2°C (88.2°F).Temperature
In September, the average high-temperature registers at a still tropical 31.2°C (88.2°F), nearly identical to August's 30.3°C (86.5°F). Bona's average low-temperature is measured at a moderately hot 24.5°C (76.1°F) during September.Heat index
The heat index value during September is computed to be a blisteringly hot 42°C (107.6°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
August and September, with an average relative humidity of 81%, are the most humid months in Bona.Rainfall
In Bona, in September, it is raining for 23.2 days, with typically 133mm (5.24") of accumulated precipitation. Throughout the year, there are 107.1 rainfall days, and 617mm (24.29") of precipitation is accumulated.Daylight
In Bona, the average length of the day in September is 12h and 12min.On the first day of September in Bona, sunrise is at 06:52 and sunset at 19:14. On the last day of the month, sunrise is at 06:52 and sunset at 18:53 GMT.
Sunshine
In September, the average sunshine in Bona is 7.5h.UV index
The months with the highest UV index are January through July, September through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 7 during September translates into the following guidance:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bona, Senegal
- Average high temperature in September: 31.2°C
The warmest months (with the highest average high temperature) are March and April (38.7°C).
The month with the lowest average high temperature is August (30.3°C).
- Average low temperature in September: 24.5°C
The month with the highest average low temperature is June (25.3°C).
The coldest month (with the lowest average low temperature) is January (20.6°C).
Average pressure in September
Bona, Senegal
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is July (1012.7mbar).
The month with the lowest atmospheric pressure is April (1010.1mbar).
Average wind speed in September
Bona, Senegal
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is February (13.3km/h).
The calmest month (with the lowest average wind speed) is October (8.1km/h).
Average humidity in September
Bona, Senegal
- Average humidity in September: 81%
The months with the highest relative humidity are August and September (81%).
The month with the lowest relative humidity is January (22%).
Average rainfall in September
Bona, Senegal
- Average rainfall in September: 133mm
The wettest month (with the highest rainfall) is August (228mm).
The driest months (with the least rainfall) are January, February, March and December (0mm).
Average rainfall days in September
Bona, Senegal
- Average rainfall days in September: 23.2 days
The month with the highest number of rainy days is August (27.6 days).
The month with the least rainy days is January (0.1 days).
Average daylight in September /
Average sunshine in September
Bona, Senegal
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in September: 7h and 30min
The months with the most sunshine are March, April and May (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 0min).
Average sunshine days in September
Bona, Senegal
- Average sunshine days in September: 5 days
The month with the most sunshine days is January (30.8 days).
The month with the least sunshine days is August (2.3 days).
Average UV index in September
Bona, Senegal
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, September, October, November and December (UV index 7).
The month with the lowest UV index is August (UV index 6).
Average cloud cover in September
Bona, Senegal
- Average cloud cover in September: 44
The month with the most cloud cover is August (Cloud cover 56).
The month with the least cloud cover is April (Cloud cover 6).
Average visibility in September
Bona, Senegal
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are July, August and September (9km).
