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September Weather in Caslav, Czech Republic

Last updated: August 23, 2025

In September, the average temperature in Caslav, Czech Republic hovers around 15°C (60°F). However, temperatures can range dramatically, with minimums dipping to 0°C (32°F) and maximums soaring to 31°C (88°F). During this month, expect 77 mm (3.0 in) of precipitation spread over approximately 10 days, and humidity levels are typically around 75%, adding a touch of moisture to the air.

September Temperature in Caslav

In September, in Caslav, the average temperature is 15°C (60°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop as low as 0°C (32°F). Travelers should be prepared for a wide range of temperatures, making layers essential for comfort.

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

The chart illustrates September temperature patterns in Caslav, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Caslav, September typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (88°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec333640495767686859514236
Data source: Temperature data for Caslav 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 Caslav

In Caslav in September, the total precipitation amount is 77 mm (3.0 in) spread over a duration of 10 days.

September Precipitation Trends in Caslav

The chart displays monthly precipitation patterns in Caslav, 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 Caslav, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec435251408679788977714356
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Caslav

In Caslav in September, humidity is 75%. With an average temperature of 15°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities slightly uncomfortable and requiring extra hydration while exploring the sights.

September Average Humidity in Caslav

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

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

Maximum UV Index Levels in Caslav for September

The chart shows the monthly maximum UV Index (UVI) for Caslav 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 Caslav typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224678876421
Data source: Caslav 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 Caslav Compares to Other Months

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

This table compares monthly weather conditions in Caslav, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)43 mm (1.7 inches)90%low
February Weather2°C (36°F)52 mm (2.0 inches)87%low
March Weather5°C (41°F)51 mm (2.0 inches)85%moderate
April Weather9°C (49°F)40 mm (1.6 inches)78%high
May Weather14°C (57°F)86 mm (3.4 inches)73%high
June Weather19°C (67°F)79 mm (3.1 inches)77%very high
July Weather20°C (68°F)78 mm (3.1 inches)76%very high
August Weather20°C (69°F)89 mm (3.5 inches)76%high
September Weather15°C (60°F)77 mm (3.0 inches)75%high
October Weather11°C (51°F)71 mm (2.8 inches)85%moderate
November Weather6°C (43°F)43 mm (1.7 inches)90%low
December Weather2°C (36°F)56 mm (2.2 inches)91%low

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