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September Weather in Tombu, Sierra Leone

Last updated: August 31, 2025

In September, the average temperature in Tombu, Sierra Leone hovers around 24°C (76°F). Expect a cozy atmosphere with minimums dipping to 19°C (67°F) and maximums reaching up to 32°C (90°F). However, be prepared for significant rainfall, as the area receives approximately 425 mm (16.7 in) of precipitation spread over 29 days. With an average humidity of 92%, the air feels quite tropical, adding to the region's unique charm.

September Temperature in Tombu

In September in Tombu, the average temperature is 24°C (76°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as 19°C (67°F). This pleasant climate makes it an ideal destination for exploring and outdoor activities.

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

The chart illustrates September temperature patterns in Tombu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tombu, September typically has an average temperature of 24°C (76°F), with highs reaching up to 32°C (90°F) and lows dropping to around 19°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec808383817977757576777778
Data source: Temperature data for Tombu 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 Tombu

In Tombu in September, the total precipitation amount is 425 mm (16.7 in) spread over 29 days.

September Precipitation Trends in Tombu

The chart displays monthly precipitation patterns in Tombu, 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 Tombu, September typically receives around 425 mm (16.7 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec5208110418429339341542527910318
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tombu

In Tombu in September humidity is 92%. With average temperature 24°C (76°F), this humidity feels like a wall of heat that envelops you, making every step feel heavy and sweat trickle relentlessly down your back, turning what should be a pleasant stroll into a sticky challenge for any traveler.

September Average Humidity in Tombu

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

In Tombu 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 Tombu.

Maximum UV Index Levels in Tombu for September

The chart shows the monthly maximum UV Index (UVI) for Tombu 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 Tombu typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111112131312131313121010
Data source: Tombu 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 Tombu Compares to Other Months

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

This table compares monthly weather conditions in Tombu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)5 mm (0.2 inches)51%extreme
February Weather28°C (83°F)20 mm (0.8 inches)62%extreme
March Weather28°C (83°F)81 mm (3.2 inches)68%extreme
April Weather27°C (81°F)104 mm (4.1 inches)78%extreme
May Weather26°C (79°F)184 mm (7.2 inches)82%extreme
June Weather25°C (77°F)293 mm (11.5 inches)90%extreme
July Weather24°C (75°F)393 mm (15.5 inches)89%extreme
August Weather24°C (75°F)415 mm (16.3 inches)93%extreme
September Weather24°C (76°F)425 mm (16.7 inches)92%extreme
October Weather25°C (77°F)279 mm (11.0 inches)90%extreme
November Weather25°C (78°F)103 mm (4.1 inches)82%very high
December Weather25°C (78°F)18 mm (0.7 inches)65%very high

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