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September Weather in Trnava, Czech Republic

Last updated: August 23, 2025

In September, the average temperature in Trnava, Czech Republic hovers around 14°C (58°F), with a minimum chill of 1°C (34°F) and a pleasant maximum of 28°C (83°F). Expect 81 mm (3.2 in) of precipitation spread across 11 days, creating a humid atmosphere with an average humidity of 75%. Prepare accordingly to enjoy all that this month has to offer!

September Temperature in Trnava

In September in Trnava, the average temperature is 14°C (58°F). The maximum can reach 28°C (83°F), while the minimum can drop as low as 1°C (34°F). It's an ideal time to explore Trnava with a comfortable climate, but be prepared for varying temperatures throughout the day.

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

The chart illustrates September temperature patterns in Trnava, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trnava, September typically has an average temperature of 14°C (58°F), with highs reaching up to 28°C (83°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec303439475565666758494033
Data source: Temperature data for Trnava 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 Trnava

In Trnava in September, the precipitation amount is 81 mm (3.2 in) over a span of 11 days.

September Precipitation Trends in Trnava

The chart displays monthly precipitation patterns in Trnava, 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 Trnava, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec373738388381917581544551
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trnava

In Trnava in September humidity is 75%. With an average temperature of 14°C (58°F), this humidity feels like a lingering blanket of warmth, making travel both refreshing and a bit stifling, as the moisture in the air may leave you feeling slightly sticky while enjoying outdoor adventures.

September Average Humidity in Trnava

This chart illustrates the average monthly humidity levels in Trnava, 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 Trnava is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%87%85%78%74%77%76%76%75%85%90%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trnava

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

Maximum UV Index Levels in Trnava for September

The chart shows the monthly maximum UV Index (UVI) for Trnava 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 Trnava typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689876421
Data source: Trnava 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 Trnava Compares to Other Months

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

This table compares monthly weather conditions in Trnava, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)36 mm (1.4 inches)90%low
February Weather1°C (34°F)37 mm (1.4 inches)87%moderate
March Weather4°C (39°F)38 mm (1.5 inches)85%moderate
April Weather8°C (47°F)38 mm (1.5 inches)78%high
May Weather13°C (55°F)82 mm (3.2 inches)73%very high
June Weather18°C (65°F)81 mm (3.2 inches)77%very high
July Weather19°C (66°F)91 mm (3.6 inches)76%very high
August Weather19°C (67°F)75 mm (2.9 inches)76%high
September Weather14°C (58°F)81 mm (3.2 inches)75%high
October Weather10°C (49°F)54 mm (2.1 inches)85%moderate
November Weather4°C (40°F)45 mm (1.8 inches)90%low
December Weather1°C (33°F)51 mm (2.0 inches)91%low

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