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September Weather in Jac, Romania

Last updated: August 27, 2025

In Jac, Romania, the average temperature in September hovers around 17°C (62°F). During this month, temperatures can dip as low as 1°C (34°F) and rise to a warm 32°C (90°F). Expect some moisture in the air, with an average precipitation of 51 mm (2.0 in) spread over about 7 days and a typical humidity level of 64%.

September Temperature in Jac

In September, in Jac, the average temperature is 17°C (62°F). Maximum temperatures can reach 32°C (90°F), while minimums can drop to as low as 1°C (34°F). This makes Jac an ideal destination for travelers seeking a range of experiences, from warm days to cool, refreshing nights.

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

The chart illustrates September temperature patterns in Jac, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jac, September typically has an average temperature of 17°C (62°F), with highs reaching up to 32°C (90°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec303642516068707262524435
Data source: Temperature data for Jac 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 Jac

In Jac in September, the precipitation amount is 51 mm (2.0 in) over a period of 7 days.

September Precipitation Trends in Jac

The chart displays monthly precipitation patterns in Jac, 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 Jac, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec4157525010087774251514571
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jac

In Jac in September, humidity is 64%. With an average temperature of 17°C (62°F), this humidity feels like a gentle blanket wrapping around you, creating a pleasant and refreshing atmosphere for traveling.

September Average Humidity in Jac

This chart illustrates the average monthly humidity levels in Jac, 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 Jac is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%88%87%79%71%71%64%55%64%83%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jac

In Jac 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 Jac.

Maximum UV Index Levels in Jac for September

The chart shows the monthly maximum UV Index (UVI) for Jac 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 Jac typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987422
Data source: Jac 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 Jac Compares to Other Months

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

This table compares monthly weather conditions in Jac, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)41 mm (1.6 inches)93%low
February Weather2°C (36°F)57 mm (2.2 inches)88%moderate
March Weather5°C (42°F)52 mm (2.0 inches)86%moderate
April Weather11°C (52°F)50 mm (2.0 inches)79%high
May Weather15°C (60°F)100 mm (4.0 inches)71%very high
June Weather20°C (68°F)87 mm (3.4 inches)71%very high
July Weather21°C (70°F)77 mm (3.0 inches)64%very high
August Weather22°C (72°F)42 mm (1.7 inches)55%very high
September Weather17°C (62°F)51 mm (2.0 inches)64%high
October Weather11°C (53°F)51 mm (2.0 inches)83%moderate
November Weather6°C (44°F)45 mm (1.8 inches)91%low
December Weather2°C (36°F)71 mm (2.8 inches)92%low

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