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September Weather in Kailahun, Sierra Leone

Last updated: August 31, 2025

In September, the average temperature in Kailahun, Sierra Leone hovers around 25°C (76°F). Expect a minimum of 20°C (68°F) and a maximum of 32°C (89°F), providing a warm climate overall. However, be prepared for rain, as the region sees an average precipitation of 423 mm (16.7 in) over 29 days, with humidity levels reaching a high 92%.

September Temperature in Kailahun

In September in Kailahun, the average temperature is 25°C (76°F). Maximums can reach 32°C (89°F), while minimums can be as low as 20°C (68°F). This makes Kailahun an ideal destination for travelers seeking pleasant weather and comfortable conditions.

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

The chart illustrates September temperature patterns in Kailahun, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kailahun, September typically has an average temperature of 25°C (76°F), with highs reaching up to 32°C (89°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec818382817977757576777878
Data source: Temperature data for Kailahun generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Kailahun

In Kailahun in September, the total precipitation amount is 423 mm (16.7 in) spread over 29 days.

September Precipitation Trends in Kailahun

The chart displays monthly precipitation patterns in Kailahun, 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 Kailahun, September typically receives around 423 mm (16.7 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec627839717125636932942325911824
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kailahun

In Kailahun in September, humidity is 92%. With an average temperature of 25°C (76°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities challenging and travel somewhat exhausting due to the heavy, damp air that clings to your skin.

September Average Humidity in Kailahun

This chart illustrates the average monthly humidity levels in Kailahun, 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 Kailahun is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec52%62%68%78%82%90%89%93%92%90%82%65%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kailahun

In Kailahun in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Kailahun, you can check here.

Maximum UV Index Levels in Kailahun for September

The chart shows the monthly maximum UV Index (UVI) for Kailahun 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 Kailahun typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111112131312131314121010
Data source: Kailahun 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 Kailahun Compares to Other Months

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

This table compares monthly weather conditions in Kailahun, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)6 mm (0.2 inches)51%extreme
February Weather28°C (83°F)27 mm (1.1 inches)62%extreme
March Weather28°C (83°F)83 mm (3.3 inches)68%extreme
April Weather27°C (81°F)97 mm (3.8 inches)78%extreme
May Weather26°C (80°F)171 mm (6.7 inches)82%extreme
June Weather25°C (77°F)256 mm (10.1 inches)90%extreme
July Weather24°C (76°F)369 mm (14.5 inches)89%extreme
August Weather24°C (75°F)329 mm (13.0 inches)93%extreme
September Weather25°C (76°F)423 mm (16.7 inches)92%extreme
October Weather25°C (77°F)259 mm (10.2 inches)90%extreme
November Weather25°C (78°F)118 mm (4.6 inches)82%very high
December Weather26°C (78°F)24 mm (1.0 inches)65%very high

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