September weather forecast
Mbéni, Comoros

September

Weather in September

The arrival of September in Mbéni radiates a sense of continuity in terms of weather parameters from August. The temperatures experience a slight rise and there is no significant change in the rainfall quantity, remaining at 14mm (0.55"). Wind speeds and atmospheric pressure reduce marginally, maintaining the prevailing tranquility of August. The city basks in extended hours of sunshine as the days gradually get longer, and the city reaches its annual peak in the number of sunshine days. The clearer day conditions persist, as the cloud cover percentage continues to stay minimal.

Temperature

In Mbéni, the coldest period comes during July through September, when the average high-temperature touches 25.4°C (77.7°F).

Humidity

The average relative humidity in September is 75%.

Rainfall

The months with the least rainfall are August and September Rain falls for 9.9 days and accumulates 14mm (0.55") of rain.

Daylight

In September, the average length of the day is 12h and 2min.
On the first day of September, sunrise is at 06:09 and sunset at 18:03. On the last day of the month, sunrise is at 05:50 and sunset at 18:02 EAT.

Sunshine

In Mbéni, the average sunshine in September is 10.1h.

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 of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 7 in September leads to these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Frequently asked questions

What part of the year is the coldest?
The yearly lowest temperatures occur in July through September, averaging a high-temperature of 25.4°C (77.7°F).
What is the temperature in September?
In September, in Mbéni, the average high-temperature is 25.4°C (77.7°F), and the average low-temperature is 24.2°C (75.6°F). In May, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 30°C (86°F).
What is the average humidity in September?
In Mbéni, the average relative humidity in September is 75%.
What is the driest month?
August and September are months with the least rain when the rain falls for 9.9 days and typically aggregates up to 14mm (0.55") of rain.
How many days does it rain in September in Mbéni?
In September, the rain falls for 9.9 days. Throughout September, 14mm (0.55") of precipitation is accumulated.
What is the average length of the day in September?
In September, the average day length is 12h and 2min.
What time are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 06:09 and sunset at 18:03. On the last day of the month, sunrise is at 05:50 and sunset at 18:02 EAT.
How long on average sun shines in September?
In September, the average sunshine duration is 10.1h.
What are the months with the highest UV index?
January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index.
What is the UV index intensity in September?
The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe 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
Mbéni, Comoros
  • Average high temperature in September: 25.4°C

The warmest month (with the highest average high temperature) is March (28.6°C).
The months with the lowest average high temperature are July, August and September (25.4°C).

  • Average low temperature in September: 24.2°C

The month with the highest average low temperature is March (27.5°C).
The coldest month (with the lowest average low temperature) is August (23.9°C).

Average pressure in September
Mbéni, Comoros
  • Average pressure in September: 1016.2mbar

The month with the highest atmospheric pressure is July (1017mbar).
The month with the lowest atmospheric pressure is February (1010mbar).

Average wind speed in September
Mbéni, Comoros
  • Average wind speed in September: 12.5km/h

The windiest month (with the highest average wind speed) is July (22.1km/h).
The calmest months (with the lowest average wind speed) are March, November and December (12km/h).

Average humidity in September
Mbéni, Comoros
  • Average humidity in September: 75%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is July (73%).

Average rainfall in September
Mbéni, Comoros
  • Average rainfall in September: 14mm

The wettest month (with the highest rainfall) is January (176mm).
The driest months (with the least rainfall) are August and September (14mm).

Average rainfall days in September
Mbéni, Comoros
  • Average rainfall days in September: 9.9 days

The month with the highest number of rainy days is April (23.1 days).
The month with the least rainy days is August (9.8 days).

Average daylight in September /
Average sunshine in September
Mbéni, Comoros
  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is November (Average sunshine: 11h and 18min).
The months with the least sunshine are May and June (Average sunshine: 7h and 12min).

Average sunshine days in September
Mbéni, Comoros
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is August (15.8 days).
The month with the least sunshine days is April (5.1 days).

Average UV index in September
Mbéni, Comoros
  • 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
Mbéni, Comoros
  • Average cloud cover in September: 23

The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in September
Mbéni, Comoros
  • 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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