September Weather in Say, Niger

Last updated: August 31, 2025

In September, the average temperature in Say, Niger reaches a warm 29°C (84°F), with a range that can dip to a comfortable 22°C (72°F) and peak at a sizzling 38°C (100°F). Expect about 75 mm (2.9 in) of rainfall over 8 days, contributing to an average humidity of 76%, creating a tropical feel throughout the month.

September Temperature in Say

In September in Say, the average temperature is 29°C (84°F). Maximums can reach 38°C (100°F) and minimums can be as low as 22°C (72°F). Be sure to pack light clothing and stay hydrated while enjoying the warm weather!

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

The chart illustrates September temperature patterns in Say, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Say, September typically has an average temperature of 29°C (84°F), with highs reaching up to 38°C (100°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Say

In Say in September, the precipitation amount is 75 mm (2.9 in) over a span of 8 days.

September Precipitation Trends in Say

The chart displays monthly precipitation patterns in Say, 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 Say, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 8 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 Say

In Say in September, humidity is 76%. With an average temperature of 29°C (84°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities a challenge and encouraging travelers to seek shade or cool refreshments frequently.

September Average Humidity in Say

This chart illustrates the average monthly humidity levels in Say, 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 Say 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 Say

In Say 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 Say.

Maximum UV Index Levels in Say for September

The chart shows the monthly maximum UV Index (UVI) for Say 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 Say typically reaches 12, which falls under the extreme exposure category.

Data source: Say 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 Say Compares to Other Months

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

This table compares monthly weather conditions in Say, 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 (76°F)	0 mm (0.0 inches)	10%	extreme
February Weather	27°C (81°F)	0 mm (0.0 inches)	8%	extreme
March Weather	32°C (89°F)	1 mm (0.0 inches)	11%	extreme
April Weather	35°C (94°F)	1 mm (0.0 inches)	26%	extreme
May Weather	34°C (94°F)	8 mm (0.3 inches)	49%	extreme
June Weather	32°C (90°F)	32 mm (1.3 inches)	67%	extreme
July Weather	29°C (85°F)	54 mm (2.1 inches)	69%	extreme
August Weather	28°C (82°F)	185 mm (7.3 inches)	77%	extreme
September Weather	29°C (84°F)	75 mm (2.9 inches)	76%	extreme
October Weather	30°C (87°F)	20 mm (0.8 inches)	66%	extreme
November Weather	28°C (83°F)	0 mm (0.0 inches)	27%	very high
December Weather	25°C (78°F)	0 mm (0.0 inches)	12%	very high