September Weather in Cerkno, Slovenia

Last updated: August 27, 2025

In Cerkno, Slovenia, the average temperature in September hovers around 14°C (58°F), with a minimum dipping to 0°C (32°F) and a maximum soaring to 26°C (78°F). Expect approximately 192 mm (7.6 in) of precipitation over 14 days, contributing to an average humidity level of 74%. Stay prepared for a mix of pleasant and rainy days!

September Temperature in Cerkno

In September in Cerkno, the average temperature is 14°C (58°F). Maximum temperatures can reach 26°C (78°F), while minimums can drop as low as 0°C (32°F). It's advisable to pack layers for your trip to ensure comfort throughout the varying temperatures.

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

The chart illustrates September temperature patterns in Cerkno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cerkno, September typically has an average temperature of 14°C (58°F), with highs reaching up to 26°C (78°F) and lows dropping to around 0°C (32°F).

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

September Precipitation in Cerkno

In Cerkno in September, the total precipitation amount is 192 mm (7.6 in) over the course of 14 days.

September Precipitation Trends in Cerkno

The chart displays monthly precipitation patterns in Cerkno, 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 Cerkno, September typically receives around 192 mm (7.6 inches) of precipitation spread over approximately 14 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 Cerkno

In Cerkno in September humidity is 74%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or indoor venues more often.

September Average Humidity in Cerkno

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

In Cerkno in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Cerkno.

Maximum UV Index Levels in Cerkno for September

The chart shows the monthly maximum UV Index (UVI) for Cerkno 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 Cerkno typically reaches 7, which falls under the high exposure category.

Data source: Cerkno 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 Cerkno Compares to Other Months

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

This table compares monthly weather conditions in Cerkno, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	60 mm (2.4 inches)	91%	low
February Weather	1°C (34°F)	108 mm (4.2 inches)	87%	moderate
March Weather	4°C (39°F)	100 mm (4.0 inches)	82%	high
April Weather	8°C (47°F)	139 mm (5.5 inches)	79%	high
May Weather	12°C (55°F)	203 mm (8.0 inches)	74%	very high
June Weather	18°C (64°F)	133 mm (5.3 inches)	75%	very high
July Weather	19°C (66°F)	163 mm (6.4 inches)	74%	very high
August Weather	19°C (66°F)	177 mm (7.0 inches)	68%	very high
September Weather	14°C (58°F)	192 mm (7.6 inches)	74%	high
October Weather	9°C (49°F)	124 mm (4.9 inches)	88%	moderate
November Weather	5°C (40°F)	183 mm (7.2 inches)	90%	moderate
December Weather	0°C (31°F)	157 mm (6.2 inches)	89%	low