September weather forecastKetonou, Benin
September
Weather in September
September, the first month of the autumn in Ketonou, is also a moderately hot month, with temperature in the range of an average low of 24.2°C (75.6°F) and an average high of 28.2°C (82.8°F).Temperature
Ketonou observes an average high-temperature of a still moderately hot 28.2°C (82.8°F) in September, barely different from 27.4°C (81.3°F) in August. A minor drop in temperature is observed from daytime highs in Ketonou during the nights of September, averaging a still moderately hot 24.2°C (75.6°F).Heat index
The heat index in September is computed to be a tropical 33°C (91.4°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to 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.
Humidity
August and September, with an average relative humidity of 83%, are the most humid months.Rainfall
In Ketonou, in September, during 21.7 rainfall days, 62mm (2.44") of precipitation is typically accumulated. Throughout the year, in Ketonou, there are 204.5 rainfall days, and 599mm (23.58") of precipitation is accumulated.Daylight
The average length of the day in September in Ketonou is 12h and 9min.On the first day of September in Ketonou, sunrise is at 06:42 and sunset at 18:56. On the last day of the month, sunrise is at 06:37 and sunset at 18:41 WAT.
Sunshine
In September, the average sunshine is 7.2h.UV index
The months with the highest UV index are January through June, September through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 7 during September translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ketonou, Benin
- Average high temperature in September: 28.2°C
The warmest months (with the highest average high temperature) are March and April (32°C).
The month with the lowest average high temperature is August (27.4°C).
- Average low temperature in September: 24.2°C
The month with the highest average low temperature is April (27.3°C).
The coldest month (with the lowest average low temperature) is August (23.8°C).
Average pressure in September
Ketonou, Benin
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is July (1013.4mbar).
The months with the lowest atmospheric pressure are February and March (1009.4mbar).
Average wind speed in September
Ketonou, Benin
- Average wind speed in September: 14.1km/h
The windiest month (with the highest average wind speed) is August (16.7km/h).
The calmest month (with the lowest average wind speed) is December (10.9km/h).
Average humidity in September
Ketonou, Benin
- Average humidity in September: 83%
The months with the highest relative humidity are August and September (83%).
The month with the lowest relative humidity is January (71%).
Average rainfall in September
Ketonou, Benin
- Average rainfall in September: 62mm
The wettest month (with the highest rainfall) is June (126mm).
The driest month (with the least rainfall) is January (18mm).
Average rainfall days in September
Ketonou, Benin
- Average rainfall days in September: 21.7 days
The month with the highest number of rainy days is June (22.5 days).
The month with the least rainy days is January (9.1 days).
Average daylight in September /
Average sunshine in September
Ketonou, Benin
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is December (Average sunshine: 9h and 42min).
The month with the least sunshine is July (Average sunshine: 6h and 18min).
Average sunshine days in September
Ketonou, Benin
- Average sunshine days in September: 6.6 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is November (4.3 days).
Average UV index in September
Ketonou, Benin
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, September, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 6).
Average cloud cover in September
Ketonou, Benin
- Average cloud cover in September: 50
The month with the most cloud cover is July (Cloud cover 56).
The month with the least cloud cover is December (Cloud cover 14).
Average visibility in September
Ketonou, Benin
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
