September Weather in Tripoli, United States

Last updated: June 24, 2025

In September, the average temperature in Tripoli, United States hovers around 19°C (66°F), providing a pleasant climate for exploration. Temperatures can vary, dipping to a chilly 2°C (36°F) at night or soaring to a warm 33°C (92°F) during the day. Be prepared for a bit of rain, as 129 mm (5.1 in) of precipitation can be expected over the course of 10 days. With an average humidity of 74%, the air feels pleasantly refreshing, making it a perfect time to experience all that this locale has to offer!

September Temperature in Tripoli

In September in Tripoli, the average temperature is 19°C (66°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 2°C (36°F). This diverse climate makes Tripoli an ideal destination for travelers looking to experience a range of temperatures and activities.

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

The chart illustrates September temperature patterns in Tripoli, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tripoli, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (36°F).

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

September Precipitation in Tripoli

In Tripoli in September, the precipitation amount is 129 mm (5.1 in) over a span of 10 days.

September Precipitation Trends in Tripoli

The chart displays monthly precipitation patterns in Tripoli, 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 Tripoli, September typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Tripoli

In Tripoli in September humidity is 74%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it ideal for leisurely outdoor exploration but potentially heavy for those not accustomed to tropical conditions.

September Average Humidity in Tripoli

This chart illustrates the average monthly humidity levels in Tripoli, 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 Tripoli is approximately 74%, 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 Tripoli

In Tripoli in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Tripoli.

Maximum UV Index Levels in Tripoli for September

The chart shows the monthly maximum UV Index (UVI) for Tripoli 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 Tripoli typically reaches 8, which falls under the very high exposure category.

Data source: Tripoli 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 Tripoli Compares to Other Months

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

This table compares monthly weather conditions in Tripoli, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	39 mm (1.6 inches)	84%	moderate
February Weather	-7°C (20°F)	52 mm (2.0 inches)	85%	moderate
March Weather	2°C (36°F)	73 mm (2.9 inches)	84%	moderate
April Weather	8°C (47°F)	74 mm (2.9 inches)	83%	very high
May Weather	16°C (61°F)	174 mm (6.8 inches)	75%	very high
June Weather	22°C (72°F)	139 mm (5.5 inches)	79%	extreme
July Weather	24°C (75°F)	103 mm (4.1 inches)	75%	very high
August Weather	22°C (71°F)	112 mm (4.4 inches)	69%	very high
September Weather	19°C (66°F)	129 mm (5.1 inches)	74%	very high
October Weather	10°C (51°F)	136 mm (5.3 inches)	79%	moderate
November Weather	2°C (36°F)	49 mm (1.9 inches)	88%	moderate
December Weather	-2°C (29°F)	35 mm (1.4 inches)	82%	moderate