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September Weather in Trutnov, Czech Republic

Last updated: August 23, 2025

In Trutnov, Czech Republic during the month of September, the average temperature is a comfortable 13°C (56°F). Expect temperatures to range from a chilly 0°C (32°F) at night to a warm 28°C (82°F) during the day. However, be prepared for 77 mm (3.0 in) of precipitation over 11 days, coupled with an average humidity level of 72%.

September Temperature in Trutnov

In September in Trutnov, the average temperature is 13°C (56°F). Maximum temperatures can reach 28°C (82°F), while minimums can dip as low as 0°C (32°F). This range makes Trutnov an ideal destination for travelers looking to enjoy mild weather with a chance for both warm and cool experiences.

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

The chart illustrates September temperature patterns in Trutnov, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trutnov, September typically has an average temperature of 13°C (56°F), with highs reaching up to 28°C (82°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec283236455363636456483932
Data source: Temperature data for Trutnov 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 Trutnov

In Trutnov in September, the precipitation amount is 77 mm (3.0 in) over the course of 11 days.

September Precipitation Trends in Trutnov

The chart displays monthly precipitation patterns in Trutnov, 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 Trutnov, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec5154534697878810577714460
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trutnov

In Trutnov in September, humidity is 72%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making outdoor activities somewhat uncomfortable and reminding travelers to stay hydrated and seek shade whenever possible.

September Average Humidity in Trutnov

This chart illustrates the average monthly humidity levels in Trutnov, 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 Trutnov is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%84%78%63%63%61%65%72%80%87%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trutnov

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

Maximum UV Index Levels in Trutnov for September

The chart shows the monthly maximum UV Index (UVI) for Trutnov 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 Trutnov typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234678876421
Data source: Trutnov 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 Trutnov Compares to Other Months

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

This table compares monthly weather conditions in Trutnov, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)51 mm (2.0 inches)89%low
February Weather0°C (32°F)54 mm (2.1 inches)87%moderate
March Weather2°C (37°F)53 mm (2.1 inches)84%moderate
April Weather7°C (45°F)46 mm (1.8 inches)78%high
May Weather12°C (53°F)97 mm (3.8 inches)63%high
June Weather17°C (63°F)87 mm (3.4 inches)63%very high
July Weather17°C (64°F)88 mm (3.5 inches)61%very high
August Weather18°C (65°F)105 mm (4.1 inches)65%high
September Weather13°C (56°F)77 mm (3.0 inches)72%high
October Weather9°C (48°F)71 mm (2.8 inches)80%moderate
November Weather4°C (39°F)44 mm (1.7 inches)87%low
December Weather0°C (32°F)60 mm (2.4 inches)91%low

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