September weather forecast
Yoko, Benin

September

Weather in September

The first month of the autumn, September, is still a warm month in Yoko, Benin, with an average temperature varying between 23.9°C (75°F) and 29.5°C (85.1°F).

Temperature

September's commencement is accompanied by an average high-temperature of a still moderately hot 29.5°C (85.1°F), diverging marginally from August's 28.7°C (83.7°F). In September, the nighttime temperature lowers to an average of 23.9°C (75°F).

Heat index

The heat index in September is evaluated at a very hot 36°C (96.8°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. 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 hold particular significance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

July through September, with an average relative humidity of 81%, are the most humid months.

Rainfall

In Yoko, during September, the rain falls for 19 days and regularly aggregates up to 64mm (2.52") of precipitation. Throughout the year, there are 148.7 rainfall days, and 481mm (18.94") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of September, 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

The average sunshine in September in Yoko is 6.3h.

UV index

The months with the lowest UV index in Yoko, Benin, are June, July and September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Frequently asked questions

How hot does it get in Yoko in September?
September temperatures vary between a high-temperature of 29.5°C (85.1°F) and a low-temperature of 23.9°C (75°F). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 36°C (96.8°F).
What are the most humid months in Yoko?
July through September, with an average relative humidity of 81%, are most humid months in Yoko, Benin.
What is the average humidity in September in Yoko?
The average relative humidity in September in Yoko is 81%.
How many days does it rain in September in Yoko?
In Yoko, in September, during 19 rainfall days, 64mm (2.52") of precipitation is typically accumulated.
How many hours of daylight does Yoko have in September?
The average day length in September in Yoko, Benin, is 12h and 10min.
When is the sunrise / sunset in September in Yoko?
In September, on the first day of the month, sunrise is at 06:42 and sunset at 18:56. On the last day of the month, in Yoko, Benin, sunrise is at 06:37 and sunset at 18:41 WAT.
How many hours of sunshine does Yoko have in September?
The average sunshine duration in September is 6.3h.
What is the month with the lowest UV index in Yoko?
The months with the lowest UV index in Yoko are June, July and September, with an average maximum UV index of 6.
What is the UV index intensity in September in Yoko?
In Yoko, Benin, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Yoko, Benin
  • Average high temperature in September: 29.5°C

The warmest month (with the highest average high temperature) is January (33.8°C).
The month with the lowest average high temperature is August (28.7°C).

  • Average low temperature in September: 23.9°C

The month with the highest average low temperature is April (26.8°C).
The coldest month (with the lowest average low temperature) is August (23.4°C).

Average pressure in September
Yoko, 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
Yoko, Benin
  • Average wind speed in September: 11.1km/h

The windiest month (with the highest average wind speed) is August (13.4km/h).
The calmest month (with the lowest average wind speed) is December (8.8km/h).

Average humidity in September
Yoko, Benin
  • Average humidity in September: 81%

The months with the highest relative humidity are July, August and September (81%).
The month with the lowest relative humidity is January (67%).

Average rainfall in September
Yoko, Benin
  • Average rainfall in September: 64mm

The wettest months (with the highest rainfall) are June and July (110mm).
The driest month (with the least rainfall) is December (7mm).

Average rainfall days in September
Yoko, Benin
  • Average rainfall days in September: 19 days

The month with the highest number of rainy days is July (23.9 days).
The month with the least rainy days is January (4.8 days).

Average daylight in September /
Average sunshine in September
Yoko, Benin
  • Average daylight in September: 12h and 1min

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 42min).

  • Average sunshine in September: 6h and 2min

The month with the most sunshine is December (Average sunshine: 9h and 36min).
The month with the least sunshine is July (Average sunshine: 5h and 24min).

Average sunshine days in September
Yoko, Benin
  • Average sunshine days in September: 8.4 days

The month with the most sunshine days is January (24.9 days).
The month with the least sunshine days is July (4.5 days).

Average UV index in September
Yoko, Benin
  • Average UV index in September: 6

The months with the highest UV index are January, February, March, April, May, August, October, November and December (UV index 7).
The months with the lowest UV index are June, July and September (UV index 6).

Average cloud cover in September
Yoko, Benin
  • Average cloud cover in September: 55

The month with the most cloud cover is August (Cloud cover 61).
The month with the least cloud cover is December (Cloud cover 15).

Average visibility in September
Yoko, Benin
  • Average visibility in September: 10km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).

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