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September Weather in Knezha, Bulgaria

Last updated: August 22, 2025

In September, the average temperature in Knezha, Bulgaria is a pleasant 21°C (69°F). However, temperatures can vary significantly, with a minimum of 3°C (37°F) and a maximum reaching up to 37°C (98°F). During this period, you can expect an average precipitation of 15 mm (0.6 in) over the course of 3 days, accompanied by a comfortable 59% humidity.

September Temperature in Knezha

In September in Knezha, the average temperature is 21°C (69°F), with maximums reaching up to 37°C (98°F) and minimums dipping as low as 3°C (37°F). Be prepared for a wide range of temperatures if you plan to visit during this month.

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

The chart illustrates September temperature patterns in Knezha, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Knezha, September typically has an average temperature of 21°C (69°F), with highs reaching up to 37°C (98°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec333945556572767769574638
Data source: Temperature data for Knezha 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 Knezha

In Knezha in September, the precipitation amount is 15 mm (0.6 in) over the course of 3 days.

September Precipitation Trends in Knezha

The chart displays monthly precipitation patterns in Knezha, 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 Knezha, September typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec444479417289782915584451
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Knezha

In Knezha in September, humidity is 59%. With an average temperature of 21°C (69°F), this humidity feels like a comfortable embrace, making it ideal for exploring local attractions without the discomfort of excessive heat or stickiness.

September Average Humidity in Knezha

This chart illustrates the average monthly humidity levels in Knezha, 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 Knezha is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%85%83%71%73%67%68%50%59%79%87%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Knezha

In Knezha in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Knezha.

Maximum UV Index Levels in Knezha for September

The chart shows the monthly maximum UV Index (UVI) for Knezha 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 Knezha typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246789987532
Data source: Knezha 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 Knezha Compares to Other Months

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

This table compares monthly weather conditions in Knezha, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)44 mm (1.7 inches)89%low
February Weather4°C (39°F)43 mm (1.7 inches)85%moderate
March Weather7°C (45°F)79 mm (3.1 inches)83%high
April Weather13°C (55°F)41 mm (1.6 inches)71%high
May Weather18°C (65°F)72 mm (2.8 inches)73%very high
June Weather22°C (72°F)89 mm (3.5 inches)67%very high
July Weather24°C (76°F)78 mm (3.1 inches)68%very high
August Weather25°C (77°F)29 mm (1.1 inches)50%very high
September Weather21°C (69°F)15 mm (0.6 inches)59%high
October Weather14°C (57°F)58 mm (2.3 inches)79%moderate
November Weather8°C (46°F)44 mm (1.7 inches)87%moderate
December Weather3°C (38°F)51 mm (2.0 inches)89%low

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