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September Weather in Serdica, Slovenia

Last updated: August 27, 2025

In September, the average temperature in Serdica, Slovenia is a mild 17°C (63°F), with daily highs reaching up to 32°C (91°F) and lows dipping to 2°C (36°F). Expect around 110 mm (4.3 in) of precipitation spread across 10 days, contributing to an average humidity of 65%. Stay prepared for fluctuating weather as you enjoy your time in this vibrant locale!

September Temperature in Serdica

In September in Serdica, the average temperature is 17°C (63°F), with maximums reaching 32°C (91°F) and minimums dipping as low as 2°C (36°F). Be sure to pack accordingly for both warm days and cool nights during your travels.

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

The chart illustrates September temperature patterns in Serdica, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serdica, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (91°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec333944536070727262534436
Data source: Temperature data for Serdica 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 Serdica

In Serdica in September, the precipitation amount is 110 mm (4.3 in) over a period of 10 days.

September Precipitation Trends in Serdica

The chart displays monthly precipitation patterns in Serdica, 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 Serdica, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec26433649115908490110557258
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Serdica

In Serdica in September humidity is 65%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making it a comfortable yet slightly muggy experience for traveling, where you might find yourself seeking shade or a refreshing drink to stay cool and refreshed.

September Average Humidity in Serdica

This chart illustrates the average monthly humidity levels in Serdica, 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 Serdica is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%84%78%73%71%73%70%60%65%84%89%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Serdica

In Serdica 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 Serdica, you can refer to this Hourly UV Index in Serdica.

Maximum UV Index Levels in Serdica for September

The chart shows the monthly maximum UV Index (UVI) for Serdica 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 Serdica typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Serdica 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 Serdica Compares to Other Months

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

This table compares monthly weather conditions in Serdica, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)26 mm (1.0 inches)90%low
February Weather4°C (39°F)43 mm (1.7 inches)84%moderate
March Weather7°C (44°F)36 mm (1.4 inches)78%moderate
April Weather12°C (53°F)49 mm (1.9 inches)73%high
May Weather16°C (60°F)115 mm (4.5 inches)71%very high
June Weather21°C (70°F)90 mm (3.5 inches)73%very high
July Weather22°C (72°F)84 mm (3.3 inches)70%very high
August Weather22°C (72°F)90 mm (3.5 inches)60%very high
September Weather17°C (63°F)110 mm (4.3 inches)65%high
October Weather12°C (54°F)55 mm (2.1 inches)84%moderate
November Weather7°C (44°F)72 mm (2.8 inches)89%low
December Weather2°C (36°F)58 mm (2.3 inches)89%low

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