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September Weather in Yonibana, Sierra Leone

Last updated: August 31, 2025

In September, the average temperature in Yonibana, Sierra Leone hovers around 25°C (78°F). You can expect the minimum to dip to 22°C (71°F) and the maximum to soar to 33°C (92°F). Be prepared for significant rainfall, with 440 mm (17.3 in) expected over 28 days, and don’t forget to account for high humidity levels at 92%!

September Temperature in Yonibana

In September in Yonibana, the average temperature is 25°C (78°F). Maximums can reach 33°C (92°F), and minimums can drop as low as 22°C (71°F). This pleasant weather makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Yonibana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yonibana, September typically has an average temperature of 25°C (78°F), with highs reaching up to 33°C (92°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec828484838179777777797981
Data source: Temperature data for Yonibana 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 Yonibana

In Yonibana in September, the precipitation amount is 440 mm (17.3 in) spread over a period of 28 days.

September Precipitation Trends in Yonibana

The chart displays monthly precipitation patterns in Yonibana, 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 Yonibana, September typically receives around 440 mm (17.3 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec417319618240448669644024012120
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yonibana

In Yonibana in September, humidity is 92%. With an average temperature of 25°C (78°F), this humidity feels like a thick blanket wrapping around you, making travel uncomfortable and sticky as you navigate through the heat.

September Average Humidity in Yonibana

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

In Yonibana 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 Yonibana.

Maximum UV Index Levels in Yonibana for September

The chart shows the monthly maximum UV Index (UVI) for Yonibana 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 Yonibana typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec101111121312131313121010
Data source: Yonibana 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 Yonibana Compares to Other Months

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

This table compares monthly weather conditions in Yonibana, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (83°F)3 mm (0.1 inches)51%very high
February Weather29°C (84°F)17 mm (0.7 inches)62%extreme
March Weather29°C (85°F)31 mm (1.2 inches)68%extreme
April Weather29°C (84°F)96 mm (3.8 inches)78%extreme
May Weather27°C (82°F)182 mm (7.2 inches)82%extreme
June Weather26°C (79°F)404 mm (15.9 inches)90%extreme
July Weather25°C (77°F)486 mm (19.1 inches)89%extreme
August Weather25°C (77°F)696 mm (27.4 inches)93%extreme
September Weather25°C (78°F)440 mm (17.3 inches)92%extreme
October Weather26°C (79°F)240 mm (9.5 inches)90%extreme
November Weather26°C (80°F)121 mm (4.8 inches)82%very high
December Weather27°C (81°F)20 mm (0.8 inches)65%very high

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