September Weather in Zimmi, Sierra Leone

Last updated: August 31, 2025

In September, the average temperature in Zimmi, Sierra Leone hovers around 25°C (77°F), offering a warm embrace for visitors. Expect a comfortable minimum of 21°C (71°F) and an occasional peak at 34°C (93°F). However, be prepared for the wet weather, as precipitation amounts to 526 mm (20.7 in) across 29 days, and the air remains quite humid with an average of 94% humidity.

September Temperature in Zimmi

In September in Zimmi, the average temperature is 25°C (77°F). Maximums can reach 34°C (93°F), and minimums can be as low as 21°C (71°F). This pleasant weather makes Zimmi an ideal destination for travelers looking to enjoy outdoor activities and soak up the sun.

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

The chart illustrates September temperature patterns in Zimmi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Zimmi, September typically has an average temperature of 25°C (77°F), with highs reaching up to 34°C (93°F) and lows dropping to around 21°C (71°F).

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

September Precipitation in Zimmi

In Zimmi in September, the total precipitation amount is 526 mm (20.7 in), measured over a duration of 29 days.

September Precipitation Trends in Zimmi

The chart displays monthly precipitation patterns in Zimmi, 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 Zimmi, September typically receives around 526 mm (20.7 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 Zimmi

In Zimmi 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 Zimmi

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

In Zimmi 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 Zimmi.

Maximum UV Index Levels in Zimmi for September

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

Data source: Zimmi 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 Zimmi Compares to Other Months

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

This table compares monthly weather conditions in Zimmi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	39 mm (1.5 inches)	71%	extreme
February Weather	27°C (81°F)	68 mm (2.7 inches)	76%	extreme
March Weather	27°C (81°F)	134 mm (5.3 inches)	79%	extreme
April Weather	27°C (80°F)	226 mm (8.9 inches)	83%	extreme
May Weather	26°C (79°F)	321 mm (12.7 inches)	84%	extreme
June Weather	25°C (78°F)	406 mm (16.0 inches)	88%	extreme
July Weather	24°C (76°F)	564 mm (22.2 inches)	89%	extreme
August Weather	24°C (76°F)	534 mm (21.0 inches)	93%	extreme
September Weather	25°C (77°F)	526 mm (20.7 inches)	94%	extreme
October Weather	25°C (78°F)	367 mm (14.5 inches)	91%	extreme
November Weather	26°C (79°F)	172 mm (6.8 inches)	83%	very high
December Weather	26°C (79°F)	78 mm (3.1 inches)	77%	very high