September Weather in Athi River, Kenya

Last updated: August 23, 2025

The average temperature in Athi River, Kenya during September hovers around 19°C (67°F), offering a pleasant climate for outdoor activities. Expect minimum temperatures of 11°C (52°F) and maximum highs reaching up to 28°C (84°F). During this time, you can anticipate about 28 mm (1.1 in) of precipitation over 4 days, contributing to an average humidity of 63%. Perfect for those looking to enjoy a fresh yet comfortable atmosphere!

September Temperature in Athi River

In September, in Athi River, the average temperature is 19°C (67°F). Maximums can reach 28°C (84°F) and minimums can drop to as low as 11°C (52°F). This mild climate makes Athi River a great destination for outdoor activities and exploration during this time of year.

September Weather in Athi River: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Athi River, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Athi River, September typically has an average temperature of 19°C (67°F), with highs reaching up to 28°C (84°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Athi River

In Athi River in September, the precipitation amount is 28 mm (1.1 in) over the course of 4 days.

September Precipitation Trends in Athi River

The chart displays monthly precipitation patterns in Athi River, 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 Athi River, September typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 4 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 Athi River

In Athi River in September, humidity is 63%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace that adds a touch of heaviness to the air, making it slightly uncomfortable for traveling but still manageable with light clothing and plenty of hydration.

September Average Humidity in Athi River

This chart illustrates the average monthly humidity levels in Athi River, 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 Athi River is approximately 63%, 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 Athi River

In Athi River in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Athi River.

Maximum UV Index Levels in Athi River for September

The chart shows the monthly maximum UV Index (UVI) for Athi River 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 Athi River typically reaches 15, which falls under the extreme exposure category.

Data source: Athi River 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 Athi River Compares to Other Months

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

This table compares monthly weather conditions in Athi River, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	42 mm (1.7 inches)	64%	extreme
February Weather	21°C (70°F)	46 mm (1.8 inches)	53%	extreme
March Weather	21°C (71°F)	94 mm (3.7 inches)	49%	extreme
April Weather	21°C (69°F)	174 mm (6.8 inches)	54%	extreme
May Weather	19°C (67°F)	112 mm (4.4 inches)	71%	extreme
June Weather	18°C (65°F)	39 mm (1.5 inches)	70%	extreme
July Weather	18°C (64°F)	19 mm (0.7 inches)	63%	extreme
August Weather	18°C (65°F)	19 mm (0.7 inches)	60%	extreme
September Weather	19°C (67°F)	28 mm (1.1 inches)	63%	extreme
October Weather	20°C (69°F)	62 mm (2.4 inches)	76%	extreme
November Weather	20°C (68°F)	118 mm (4.7 inches)	89%	extreme
December Weather	20°C (67°F)	105 mm (4.2 inches)	84%	extreme