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September Weather in Hrastnik, Slovenia

Last updated: August 27, 2025

In September, the average temperature in Hrastnik, Slovenia is a pleasant 15°C (60°F). However, be prepared for some variability—while temperatures can dip as low as 1°C (34°F), they can also rise to a warm 29°C (85°F). Expect 134 mm (5.3 in) of precipitation spread over 13 days, contributing to an average humidity of 74%. Prepare accordingly for a mix of mild weather and occasional rain!

September Temperature in Hrastnik

In September in Hrastnik, the average temperature is 15°C (60°F). The maximum can reach 29°C (85°F), while the minimum can be as low as 1°C (34°F). This diverse climate makes Hrastnik an ideal destination for travelers seeking a mix of warm and cool weather experiences.

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

The chart illustrates September temperature patterns in Hrastnik, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hrastnik, September typically has an average temperature of 15°C (60°F), with highs reaching up to 29°C (85°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec323742505767696960514334
Data source: Temperature data for Hrastnik 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 Hrastnik

In Hrastnik in September, the precipitation amount is 134 mm (5.3 in) recorded over the course of 13 days.

September Precipitation Trends in Hrastnik

The chart displays monthly precipitation patterns in Hrastnik, 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 Hrastnik, September typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec39686094150891321141347610894
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hrastnik

In Hrastnik in September humidity is 74%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace that can make outdoor activities feel slightly stifling, so travelers should be prepared to hydrate frequently and take breaks in the shade.

September Average Humidity in Hrastnik

This chart illustrates the average monthly humidity levels in Hrastnik, 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 Hrastnik is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%87%82%79%74%75%74%69%74%88%90%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hrastnik

In Hrastnik in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Hrastnik, you can refer to this Hourly UV Index in Hrastnik.

Maximum UV Index Levels in Hrastnik for September

The chart shows the monthly maximum UV Index (UVI) for Hrastnik 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 Hrastnik typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986432
Data source: Hrastnik 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 Hrastnik Compares to Other Months

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

This table compares monthly weather conditions in Hrastnik, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)39 mm (1.5 inches)91%low
February Weather3°C (38°F)68 mm (2.7 inches)87%moderate
March Weather6°C (42°F)60 mm (2.4 inches)82%moderate
April Weather10°C (50°F)94 mm (3.7 inches)79%high
May Weather14°C (58°F)150 mm (5.9 inches)74%very high
June Weather19°C (67°F)89 mm (3.5 inches)75%very high
July Weather21°C (69°F)132 mm (5.2 inches)74%very high
August Weather21°C (69°F)114 mm (4.5 inches)68%very high
September Weather15°C (60°F)134 mm (5.3 inches)74%high
October Weather11°C (52°F)76 mm (3.0 inches)88%moderate
November Weather6°C (43°F)108 mm (4.2 inches)90%moderate
December Weather1°C (35°F)94 mm (3.7 inches)89%low

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