September Weather in Riyom, Nigeria

Last updated: August 27, 2025

In Riyom, Nigeria, the average temperature in September is a pleasant 21°C (70°F), with minimums dipping to 16°C (62°F) and reaching a warm maximum of 30°C (85°F). Visitors can expect rainy days, with a total precipitation of 279 mm (11.0 in) spread over 27 days. The average humidity hovers at a high 87%, creating a tropical feel throughout the month.

September Temperature in Riyom

In September in Riyom, the average temperature is 21°C (70°F). Maximums can reach 30°C (85°F), while minimums can dip as low as 16°C (62°F). This mild weather makes Riyom an ideal destination for outdoor activities and sightseeing during this time of year.

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

The chart illustrates September temperature patterns in Riyom, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riyom, September typically has an average temperature of 21°C (70°F), with highs reaching up to 30°C (85°F) and lows dropping to around 16°C (62°F).

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

September Precipitation in Riyom

In Riyom in September, the precipitation amount is 279 mm (11.0 in) over the course of 27 days.

September Precipitation Trends in Riyom

The chart displays monthly precipitation patterns in Riyom, 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 Riyom, September typically receives around 279 mm (11.0 inches) of precipitation spread over approximately 27 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 Riyom

In Riyom in September humidity is 87%. With an average temperature of 21°C (70°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities quite exhausting and requiring frequent breaks to hydrate and cool off.

September Average Humidity in Riyom

This chart illustrates the average monthly humidity levels in Riyom, 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 Riyom is approximately 87%, 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 Riyom

In Riyom in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Riyom.

Maximum UV Index Levels in Riyom for September

The chart shows the monthly maximum UV Index (UVI) for Riyom 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 Riyom typically reaches 13, which falls under the extreme exposure category.

Data source: Riyom 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 Riyom Compares to Other Months

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

This table compares monthly weather conditions in Riyom, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (70°F)	0 mm (0.0 inches)	11%	extreme
February Weather	22°C (73°F)	10 mm (0.4 inches)	13%	extreme
March Weather	25°C (78°F)	7 mm (0.3 inches)	30%	extreme
April Weather	25°C (78°F)	58 mm (2.3 inches)	60%	extreme
May Weather	23°C (74°F)	250 mm (9.8 inches)	76%	extreme
June Weather	22°C (71°F)	315 mm (12.4 inches)	82%	extreme
July Weather	21°C (70°F)	335 mm (13.2 inches)	85%	extreme
August Weather	20°C (69°F)	317 mm (12.5 inches)	87%	extreme
September Weather	21°C (70°F)	279 mm (11.0 inches)	87%	extreme
October Weather	22°C (72°F)	109 mm (4.3 inches)	85%	extreme
November Weather	22°C (72°F)	0 mm (0.0 inches)	69%	extreme
December Weather	21°C (70°F)	0 mm (0.0 inches)	23%	very high