September weather forecast
Boune, Niger

September

Weather in September

September follows the end of the high rainfall period of the year in Bouné, with significant reductions in humidity and rain. The city experiences a shift towards a more arid climate with rainfall cutting back to just 9mm (0.35"). Temperatures remain high, while wind speed decreases to an average of 11.9km/h (7.4mph). After the humid August, September brings a considerable drop in the humidity levels to 36%. With this transition, Bouné paves the way towards more pleasant weather conditions moving further into the year.

Temperature

With the advent of September, Boune experiences an average high-temperature of a sweltering 37.6°C (99.7°F), mirroring a close resemblance to the previous month. Boune's September nights cool down to an average low-temperature of 28.3°C (82.9°F).

Humidity

In Boune, the average relative humidity in September is 36%.

Rainfall

In Boune, in September, during 4.2 rainfall days, 9mm (0.35") of precipitation is typically accumulated. Throughout the year, there are 36.7 rainfall days, and 133mm (5.24") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 12min.
On the first day of September in Boune, Niger, sunrise is at 06:08 and sunset at 18:30. On the last day of the month, sunrise is at 06:08 and sunset at 18:09 WAT.

Sunshine

In Boune, the average sunshine in September is 9.8h.

UV index

In Boune, the average daily maximum UV index in September is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 8 translates into the following recommendations:
Taking safety measures is non-negotiable; skin and eyes can be swiftly affected if neglected. 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. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Frequently asked questions

How hot does it get in September?
The high-temperature, in September, in Boune, is 37.6°C (99.7°F), while the low-temperature averages to 28.3°C (82.9°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is computed to be 40°C (104°F).
What is the average humidity in September?
In Boune, the average relative humidity in September is 36%.
How many days does it rain in September?
In Boune, in September, it is raining for 4.2 days, with typically 9mm (0.35") of accumulated precipitation.
How many hours of daylight does Boune have in September?
In September, the average day length is 12h and 12min.
When is the sunrise / sunset in September?
In September, on the first day of the month, sunrise is at 06:08 and sunset at 18:30. On the last day of the month, sunrise is at 06:08 and sunset at 18:09 WAT.
How long on average sun shines in September?
The average sunshine duration in September is 9.8h.
What is the UV index reading in September?
In Boune, the average daily maximum UV index in September is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation.
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
Boune, Niger
  • Average high temperature in September: 37.6°C

The warmest month (with the highest average high temperature) is May (41.5°C).
The month with the lowest average high temperature is December (30.6°C).

  • Average low temperature in September: 28.3°C

The month with the highest average low temperature is June (30°C).
The coldest month (with the lowest average low temperature) is January (15.1°C).

Average pressure in September
Boune, Niger
  • Average pressure in September: 1009.5mbar

The month with the highest atmospheric pressure is January (1014.1mbar).
The month with the lowest atmospheric pressure is May (1007.1mbar).

Average wind speed in September
Boune, Niger
  • Average wind speed in September: 11.9km/h

The windiest month (with the highest average wind speed) is December (19.7km/h).
The calmest month (with the lowest average wind speed) is September (11.9km/h).

Average humidity in September
Boune, Niger
  • Average humidity in September: 36%

The month with the highest relative humidity is August (50%).
The month with the lowest relative humidity is March (11%).

Average rainfall in September
Boune, Niger
  • Average rainfall in September: 9mm

The wettest month (with the highest rainfall) is August (72mm).
The driest months (with the least rainfall) are January, February, March, November and December (0mm).

Average rainfall days in September
Boune, Niger
  • Average rainfall days in September: 4.2 days

The month with the highest number of rainy days is August (12.5 days).
The months with the least rainy days are January, November and December (0 days).

Average daylight in September /
Average sunshine in September
Boune, Niger
  • Average daylight in September: 12h and 1min

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 18min).

  • Average sunshine in September: 9h and 5min

The months with the most sunshine are May and June (Average sunshine: 12h and 12min).
The month with the least sunshine is November (Average sunshine: 7h and 42min).

Average sunshine days in September
Boune, Niger
  • Average sunshine days in September: 24.3 days

The months with the most sunshine days are January and December (31 days).
The month with the least sunshine days is August (16.5 days).

Average UV index in September
Boune, Niger
  • Average UV index in September: 8

The month with the highest UV index is April (UV index 9).
The months with the lowest UV index are January and December (UV index 6).

Average cloud cover in September
Boune, Niger
  • Average cloud cover in September: 14

The month with the most cloud cover is August (Cloud cover 28).
The months with the least cloud cover are January, November and December (Cloud cover 3).

Average visibility in September
Boune, Niger
  • 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).

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