September Weather in Spodnja Idrija, Slovenia

Last updated: August 27, 2025

In Spodnja Idrija, Slovenia, the average temperature in September is a mild 16°C (60°F). Expect daily variations, with a minimum of 2°C (36°F) and a maximum soaring to 29°C (85°F). However, be prepared for some wet days, as 194 mm (7.6 in) of precipitation can fall over the course of 13 days. With an average humidity of 64%, this month presents a delightful, if slightly damp, experience for visitors and locals alike.

September Temperature in Spodnja Idrija

In September in Spodnja Idrija, the average temperature is 16°C (60°F). Maximum temperatures can reach 29°C (85°F), while minimums can drop as low as 2°C (36°F). It's a great time to explore and enjoy the diverse weather conditions, so pack accordingly for both warm and cooler moments!

September Weather in Spodnja Idrija: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Spodnja Idrija, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Spodnja Idrija, September typically has an average temperature of 16°C (60°F), with highs reaching up to 29°C (85°F) and lows dropping to around 2°C (36°F).

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

September Precipitation in Spodnja Idrija

In Spodnja Idrija in September, the total precipitation amount is 194 mm (7.6 in) over the course of 13 days.

September Precipitation Trends in Spodnja Idrija

The chart displays monthly precipitation patterns in Spodnja Idrija, 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 Spodnja Idrija, September typically receives around 194 mm (7.6 inches) of precipitation spread over approximately 13 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 Spodnja Idrija

In Spodnja Idrija in September humidity is 64%. With an average temperature of 16°C (60°F), this humidity feels like a soft, warm blanket wrapping around you as you travel, making the air feel heavy yet pleasantly refreshing, perfect for exploring the sights while enjoying the mild climate.

September Average Humidity in Spodnja Idrija

This chart illustrates the average monthly humidity levels in Spodnja Idrija, 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 Spodnja Idrija is approximately 64%, 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 Spodnja Idrija

In Spodnja Idrija 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 Spodnja Idrija.

Maximum UV Index Levels in Spodnja Idrija for September

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

Data source: Spodnja Idrija 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 Spodnja Idrija Compares to Other Months

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

This table compares monthly weather conditions in Spodnja Idrija, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	70 mm (2.8 inches)	88%	low
February Weather	3°C (38°F)	132 mm (5.2 inches)	82%	moderate
March Weather	6°C (42°F)	103 mm (4.1 inches)	73%	moderate
April Weather	10°C (50°F)	137 mm (5.4 inches)	73%	high
May Weather	14°C (57°F)	223 mm (8.8 inches)	70%	very high
June Weather	19°C (67°F)	128 mm (5.0 inches)	69%	very high
July Weather	20°C (69°F)	137 mm (5.4 inches)	63%	very high
August Weather	21°C (69°F)	131 mm (5.2 inches)	51%	very high
September Weather	16°C (60°F)	194 mm (7.6 inches)	64%	high
October Weather	11°C (52°F)	134 mm (5.3 inches)	83%	moderate
November Weather	6°C (44°F)	193 mm (7.6 inches)	89%	moderate
December Weather	2°C (36°F)	169 mm (6.7 inches)	88%	low