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September Weather in Petnjica, Montenegro

Last updated: August 28, 2025

In September, the average temperature in Petnjica, Montenegro hovers around 15°C (58°F). However, be prepared for a temperature range that can dip to a chilly -3°C (28°F) and soar up to a balmy 31°C (88°F). Expect 33 mm (1.3 in) of precipitation spread over about 7 days, all while enjoying an average humidity level of 65%. Stay comfortable and prepared for the varied weather!

September Temperature in Petnjica

In September in Petnjica, the average temperature is 15°C (58°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop as low as -3°C (28°F). This wide range of temperatures means travelers should be prepared for both warm days and cool nights.

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

The chart illustrates September temperature patterns in Petnjica, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petnjica, September typically has an average temperature of 15°C (58°F), with highs reaching up to 31°C (88°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec273438465461656658494133
Data source: Temperature data for Petnjica 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 Petnjica

In Petnjica in September, the precipitation amount is 33 mm (1.3 in) over a period of 7 days.

September Precipitation Trends in Petnjica

The chart displays monthly precipitation patterns in Petnjica, 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 Petnjica, September typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec80909783105978058336771132
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Petnjica

In Petnjica in September, humidity is 65%. With an average temperature of 15°C (58°F), this humidity feels like a mild but slightly muggy experience for traveling, making it essential to stay hydrated and wear breathable clothing to fully enjoy the day.

September Average Humidity in Petnjica

This chart illustrates the average monthly humidity levels in Petnjica, 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 Petnjica is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%79%75%74%66%59%53%65%78%85%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Petnjica

In Petnjica in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Petnjica.

Maximum UV Index Levels in Petnjica for September

The chart shows the monthly maximum UV Index (UVI) for Petnjica 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 Petnjica typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34789101098632
Data source: Petnjica 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 Petnjica Compares to Other Months

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

This table compares monthly weather conditions in Petnjica, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)80 mm (3.2 inches)88%moderate
February Weather1°C (34°F)90 mm (3.5 inches)82%moderate
March Weather3°C (38°F)97 mm (3.8 inches)79%high
April Weather8°C (46°F)83 mm (3.3 inches)75%very high
May Weather12°C (54°F)105 mm (4.1 inches)74%very high
June Weather16°C (61°F)97 mm (3.8 inches)66%very high
July Weather18°C (65°F)80 mm (3.1 inches)59%very high
August Weather19°C (66°F)58 mm (2.3 inches)53%very high
September Weather15°C (58°F)33 mm (1.3 inches)65%very high
October Weather9°C (49°F)67 mm (2.6 inches)78%high
November Weather5°C (42°F)71 mm (2.8 inches)85%moderate
December Weather0°C (33°F)132 mm (5.2 inches)86%low

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