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September Weather in Vrhnika, Slovenia

Last updated: August 27, 2025

In Vrhnika, Slovenia, the average temperature for September is a pleasant 15°C (60°F), with a minimum dipping to 2°C (36°F) and a maximum reaching up to 28°C (83°F). Expect 183 mm (7.2 in) of precipitation spread over about 13 days, paired with an average humidity of 64%. Enjoy the dynamic weather and prepare for all conditions!

September Temperature in Vrhnika

In September in Vrhnika, the average temperature is 15°C (60°F). Maximums can reach 28°C (83°F), and minimums can drop to as low as 2°C (36°F). Be prepared for a range of temperatures, making it ideal for layering your clothing while exploring.

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

The chart illustrates September temperature patterns in Vrhnika, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vrhnika, September typically has an average temperature of 15°C (60°F), with highs reaching up to 28°C (83°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec333842505766686859514335
Data source: Temperature data for Vrhnika generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Vrhnika

In Vrhnika in September, the total precipitation amount is 183 mm (7.2 in) over the course of 13 days.

September Precipitation Trends in Vrhnika

The chart displays monthly precipitation patterns in Vrhnika, 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 Vrhnika, September typically receives around 183 mm (7.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec6010586110188106123123183110162138
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vrhnika

In Vrhnika in September humidity is 64%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace, creating a slightly sticky atmosphere that can make outdoor activities more challenging but also adds a refreshing edge to leisurely strolls.

September Average Humidity in Vrhnika

This chart illustrates the average monthly humidity levels in Vrhnika, 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 Vrhnika is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%73%73%70%69%63%51%64%83%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vrhnika

In Vrhnika 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 Vrhnika.

Maximum UV Index Levels in Vrhnika for September

The chart shows the monthly maximum UV Index (UVI) for Vrhnika 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 Vrhnika typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Vrhnika 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 Vrhnika Compares to Other Months

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

This table compares monthly weather conditions in Vrhnika, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)59 mm (2.3 inches)88%low
February Weather3°C (38°F)105 mm (4.2 inches)82%moderate
March Weather5°C (42°F)86 mm (3.4 inches)73%moderate
April Weather10°C (50°F)110 mm (4.3 inches)73%high
May Weather14°C (57°F)188 mm (7.4 inches)70%very high
June Weather19°C (67°F)106 mm (4.2 inches)69%very high
July Weather20°C (68°F)123 mm (4.8 inches)63%very high
August Weather20°C (69°F)123 mm (4.8 inches)51%very high
September Weather15°C (60°F)183 mm (7.2 inches)64%high
October Weather11°C (52°F)110 mm (4.3 inches)83%moderate
November Weather6°C (43°F)162 mm (6.4 inches)89%moderate
December Weather2°C (35°F)138 mm (5.4 inches)88%low

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