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September Weather in Krnjak, Croatia

Last updated: August 23, 2025

In September, the average temperature in Krnjak, Croatia is a pleasant 17°C (62°F). However, be prepared for fluctuations, as temperatures can dip as low as 2°C (36°F) and soar to a warm 34°C (93°F). This month typically sees about 130 mm (5.1 in) of precipitation over 10 days, contributing to an average humidity level of 62%.

September Temperature in Krnjak

In September in Krnjak, the average temperature is 17°C (62°F). The maximum can reach 34°C (93°F), and the minimum can be as low as 2°C (36°F). Be prepared for a wide range of temperatures during your travels, from warm days to chilly nights.

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

The chart illustrates September temperature patterns in Krnjak, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Krnjak, September typically has an average temperature of 17°C (62°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec344044526070727262544639
Data source: Temperature data for Krnjak 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 Krnjak

In Krnjak in September, the precipitation amount is 130 mm (5.1 in) over a period of 10 days.

September Precipitation Trends in Krnjak

The chart displays monthly precipitation patterns in Krnjak, 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 Krnjak, September typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec66936787145669091130111124116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Krnjak

In Krnjak in September, humidity is 62%. With an average temperature of 17°C (62°F), this humidity feels like a warm embrace, making it a comfortable yet slightly muggy environment for traveling, perfect for leisurely strolls but possibly requiring light clothing adjustments.

September Average Humidity in Krnjak

This chart illustrates the average monthly humidity levels in Krnjak, 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 Krnjak is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%83%75%72%70%69%64%51%62%81%87%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Krnjak

In Krnjak 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 Krnjak.

Maximum UV Index Levels in Krnjak for September

The chart shows the monthly maximum UV Index (UVI) for Krnjak 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 Krnjak typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Krnjak 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 Krnjak Compares to Other Months

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

This table compares monthly weather conditions in Krnjak, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)66 mm (2.6 inches)89%low
February Weather5°C (41°F)93 mm (3.7 inches)83%moderate
March Weather7°C (44°F)67 mm (2.6 inches)75%moderate
April Weather11°C (52°F)87 mm (3.4 inches)72%high
May Weather15°C (60°F)145 mm (5.7 inches)70%very high
June Weather21°C (70°F)66 mm (2.6 inches)69%very high
July Weather22°C (72°F)90 mm (3.6 inches)64%very high
August Weather22°C (72°F)91 mm (3.6 inches)51%very high
September Weather17°C (62°F)130 mm (5.1 inches)62%high
October Weather12°C (54°F)111 mm (4.4 inches)81%moderate
November Weather8°C (46°F)124 mm (4.9 inches)87%moderate
December Weather4°C (39°F)116 mm (4.6 inches)88%low

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