September Weather in Niamey, Niger

Last updated: August 31, 2025

In September, the average temperature in Niamey, Niger hovers around 29°C (85°F), creating a warm and inviting atmosphere. However, temperatures can fluctuate, with a minimum of 22°C (72°F) and a peak reaching up to 39°C (102°F). Visitors should also be prepared for some occasional rain, as the region sees about 53 mm (2.1 in) of precipitation over 6 days. The average humidity level sits at a cozy 76%, contributing to the overall tropical feel.

September Temperature in Niamey

In September in Niamey, the average temperature is 29°C (85°F), with maximums reaching 39°C (102°F) and minimums dropping to as low as 22°C (72°F). It's an ideal time to visit for those who enjoy warm weather, but be sure to stay hydrated and protect yourself from the heat while exploring.

September Weather in Niamey: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Niamey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Niamey, September typically has an average temperature of 29°C (85°F), with highs reaching up to 39°C (102°F) and lows dropping to around 22°C (72°F).

Data source: Temperature data for Niamey generated using information from the Copernicus Climate Change Service.

September Precipitation in Niamey

In Niamey in September, the precipitation amount is 53 mm (2.1 in) over a span of 6 days.

September Precipitation Trends in Niamey

The chart displays monthly precipitation patterns in Niamey, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Niamey, September typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Niamey

In Niamey in September, humidity is 76%. With an average temperature of 29°C (85°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor exploration a sticky challenge but the lush surroundings and vibrant culture offer refreshing experiences in the shade.

September Average Humidity in Niamey

This chart illustrates the average monthly humidity levels in Niamey, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Niamey is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Niamey

In Niamey in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Niamey.

Maximum UV Index Levels in Niamey for September

The chart shows the monthly maximum UV Index (UVI) for Niamey in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Niamey typically reaches 12, which falls under the extreme exposure category.

Data source: Niamey September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Niamey Compares to Other Months

Weather in Niamey varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Niamey, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Niamey, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	0 mm (0.0 inches)	10%	very high
February Weather	26°C (80°F)	0 mm (0.0 inches)	8%	extreme
March Weather	31°C (89°F)	0 mm (0.0 inches)	11%	extreme
April Weather	34°C (94°F)	1 mm (0.0 inches)	26%	extreme
May Weather	35°C (95°F)	8 mm (0.3 inches)	49%	extreme
June Weather	33°C (91°F)	24 mm (0.9 inches)	67%	extreme
July Weather	30°C (86°F)	50 mm (2.0 inches)	69%	extreme
August Weather	28°C (83°F)	137 mm (5.4 inches)	77%	extreme
September Weather	29°C (85°F)	53 mm (2.1 inches)	76%	extreme
October Weather	31°C (88°F)	13 mm (0.5 inches)	66%	extreme
November Weather	29°C (84°F)	0 mm (0.0 inches)	27%	very high
December Weather	25°C (78°F)	0 mm (0.0 inches)	12%	very high