September Weather in Bomi, Sierra Leone

Last updated: August 31, 2025

In September, the average temperature in Bomi, Sierra Leone hovers around 25°C (77°F), with a minimum of 22°C (72°F) and a maximum reaching 33°C (91°F). Expect significant rainfall, with approximately 575 mm (22.6 in) spread across 29 days. The air is often humid, with an average humidity level of 94%, creating a warm and inviting atmosphere.

September Temperature in Bomi

In September in Bomi, the average temperature is 25°C (77°F). Maximums can reach 33°C (91°F) and minimums can be as low as 22°C (72°F). This mild weather makes Bomi an ideal destination for travelers looking to enjoy pleasant outdoor activities.

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

The chart illustrates September temperature patterns in Bomi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bomi, September typically has an average temperature of 25°C (77°F), with highs reaching up to 33°C (91°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Bomi

In Bomi in September, the total precipitation amount is 575 mm (22.6 in) spread over 29 days.

September Precipitation Trends in Bomi

The chart displays monthly precipitation patterns in Bomi, 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 Bomi, September typically receives around 575 mm (22.6 inches) of precipitation spread over approximately 29 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 Bomi

In Bomi in September, humidity is 94%. With an average temperature of 25°C (77°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities challenging and requiring frequent breaks to stay hydrated.

September Average Humidity in Bomi

This chart illustrates the average monthly humidity levels in Bomi, 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 Bomi is approximately 94%, 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 Bomi

In Bomi 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 Bomi.

Maximum UV Index Levels in Bomi for September

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

Data source: Bomi 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 Bomi Compares to Other Months

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

This table compares monthly weather conditions in Bomi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (80°F)	44 mm (1.7 inches)	71%	very high
February Weather	27°C (81°F)	57 mm (2.2 inches)	76%	extreme
March Weather	27°C (82°F)	124 mm (4.9 inches)	79%	extreme
April Weather	27°C (81°F)	228 mm (9.0 inches)	83%	extreme
May Weather	26°C (80°F)	319 mm (12.5 inches)	84%	extreme
June Weather	25°C (78°F)	464 mm (18.2 inches)	88%	extreme
July Weather	25°C (77°F)	593 mm (23.4 inches)	89%	extreme
August Weather	25°C (77°F)	572 mm (22.5 inches)	93%	extreme
September Weather	25°C (77°F)	575 mm (22.6 inches)	94%	extreme
October Weather	26°C (78°F)	362 mm (14.3 inches)	91%	extreme
November Weather	26°C (79°F)	182 mm (7.2 inches)	83%	very high
December Weather	26°C (79°F)	82 mm (3.2 inches)	77%	very high