Niamey
Niger
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Niamey, Niger

City structures of the Niamey city in Niger, from across the river Niger
City structures of the Niamey city in Niger, from across the river Niger
September, the first month of the autumn, in Niamey, is also a hot month, with average temperature ranging between min 23.6°C (74.5°F) and max 34.4°C (93.9°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still tropical 34.4°C (93.9°F). The average low-temperature, in Niamey, is 23.6°C (74.5°F).

Rainfall

In Niamey, during September, the rain falls for 10 days and regularly aggregates up to 92.2mm (3.6") of precipitation. In Niamey, during the entire year, the rain falls for 52 days and collects up to 540.8mm (21.3") of precipitation.

Daylight

In September, the average length of the day is 12.2h.

Sunshine

In September, the average sunshine in Niamey is 7.9h.

UV index

Months with the highest UV index are February through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 12 in September transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in September in Niamey?

In Niamey, in September, the average high-temperature is 34.4°C (93.9°F), and the average low-temperature is 23.6°C (74.5°F).

How many days does it rain in September in Niamey?

In Niamey, Niger, in September, during 10 rainfall days, 92.2mm (3.6") of precipitation is typically accumulated.

What is the average length of the day in September in Niamey?

In Niamey, the average length of the day in September is 12.2h.

How many hours of sunshine does Niamey have in September?

In September, the average sunshine in Niamey, Niger, is 7.9h.

What is the month with the highest UV index in Niamey?

Months with the highest UV index in Niamey are February through September, with an average maximum UV index of 12.

What is the UV index reading in September in Niamey?

The average daily maximum UV index in September in Niamey, Niger, is 12. A UV Index reading of 11, and higher, represents an ultimate hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Niamey, Niger
  • Average high temperature in September: 34.4°C

The warmest month (with the highest average high temperature) is April (40.9°C).
The month with the lowest average high temperature is January (32.5°C).

  • Average low temperature in September: 23.6°C

The month with the highest average low temperature is May (27.7°C).
The coldest month (with the lowest average low temperature) is January (16.1°C).

Average rainfall in September - Niamey, Niger
  • Average rainfall in September: 92.2mm

The wettest month (with the highest rainfall) is August (170.8mm).
Driest months (with the lowest rainfall) are January, February and December (0mm).

Average rainfall days in September - Niamey, Niger
  • Average rainfall days in September: 10 days

The month with the highest number of rainy days is August (14 days).
Months with the lowest number of rainy days are January, February, November and December (0 days).

Average daylight in September / Average sunshine in September - Niamey, Niger
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.3h).

  • Average sunshine in September: 7.9h

The month with most sunshine is January (Average sunshine: 9.6h).
The month with least sunshine is August (Average sunshine: 7.6h).

Average UV index in September - Niamey, Niger
  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).