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September Weather in Hejnice, Czech Republic

Last updated: August 23, 2025

In September, the average temperature in Hejnice, Czech Republic hovers around 14°C (57°F), with temperatures ranging from a chilly 0°C (33°F) to a warm 29°C (84°F). Expect about 84 mm (3.3 in) of precipitation over approximately 12 days, contributing to an average humidity of 72%. Don't forget your umbrella!

September Temperature in Hejnice

In September, in Hejnice, the average temperature is 14°C (57°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as 0°C (33°F). It's advisable to pack layers when traveling to ensure comfort in varying temperatures.

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

The chart illustrates September temperature patterns in Hejnice, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hejnice, September typically has an average temperature of 14°C (57°F), with highs reaching up to 29°C (84°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec313439465464646557504135
Data source: Temperature data for Hejnice 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 Hejnice

In Hejnice in September, the precipitation amount is 84 mm (3.3 in) over a span of 12 days.

September Precipitation Trends in Hejnice

The chart displays monthly precipitation patterns in Hejnice, 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 Hejnice, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec6965634790888911384874882
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hejnice

In Hejnice in September humidity is 72%. With an average temperature of 14°C (57°F), this humidity feels like a damp embrace, making outdoor activities slightly uncomfortable and requiring careful planning to stay hydrated and enjoy your travels.

September Average Humidity in Hejnice

This chart illustrates the average monthly humidity levels in Hejnice, 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 Hejnice 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 Hejnice

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

Maximum UV Index Levels in Hejnice for September

The chart shows the monthly maximum UV Index (UVI) for Hejnice 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 Hejnice typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876321
Data source: Hejnice 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 Hejnice Compares to Other Months

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

This table compares monthly weather conditions in Hejnice, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)69 mm (2.7 inches)89%low
February Weather1°C (34°F)65 mm (2.5 inches)87%low
March Weather4°C (39°F)63 mm (2.5 inches)84%moderate
April Weather8°C (47°F)47 mm (1.8 inches)78%high
May Weather12°C (54°F)90 mm (3.5 inches)63%high
June Weather18°C (64°F)88 mm (3.5 inches)63%very high
July Weather18°C (65°F)88 mm (3.5 inches)61%very high
August Weather18°C (65°F)113 mm (4.5 inches)65%high
September Weather14°C (57°F)84 mm (3.3 inches)72%high
October Weather10°C (50°F)87 mm (3.4 inches)80%moderate
November Weather5°C (41°F)48 mm (1.9 inches)87%low
December Weather2°C (35°F)81 mm (3.2 inches)91%low

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