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September Weather in Cornu, Romania

Last updated: August 27, 2025

In September, the average temperature in Cornu, Romania hovers around 21°C (70°F). However, temperatures can swing significantly, ranging from a chilly 0°C (33°F) to a scorching 38°C (100°F). On average, expect about 14 mm (0.6 in) of precipitation over the course of 2 days, with humidity levels settling at a comfortable 58%.

September Temperature in Cornu

In September in Cornu, the average temperature is 21°C (70°F). Maximums can reach 38°C (100°F) and minimums can be as low as 0°C (33°F). This range makes it essential for travelers to prepare for both warm and cool conditions while exploring.

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

The chart illustrates September temperature patterns in Cornu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cornu, September typically has an average temperature of 21°C (70°F), with highs reaching up to 38°C (100°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec333946566573777970574638
Data source: Temperature data for Cornu 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 Cornu

In Cornu in September, the precipitation amount is 14 mm (0.6 in) over a period of 2 days.

September Precipitation Trends in Cornu

The chart displays monthly precipitation patterns in Cornu, 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 Cornu, September typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec484364348276562314605160
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cornu

In Cornu in September, humidity is 58%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, creating a tropical atmosphere that's perfect for leisurely strolls but may require frequent breaks to stay hydrated during your travels.

September Average Humidity in Cornu

This chart illustrates the average monthly humidity levels in Cornu, 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 Cornu is approximately 58%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%86%83%74%70%67%65%51%58%80%88%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cornu

In Cornu 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 Cornu.

Maximum UV Index Levels in Cornu for September

The chart shows the monthly maximum UV Index (UVI) for Cornu 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 Cornu typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236789987532
Data source: Cornu 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 Cornu Compares to Other Months

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

This table compares monthly weather conditions in Cornu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)48 mm (1.9 inches)91%low
February Weather4°C (40°F)43 mm (1.7 inches)86%moderate
March Weather8°C (46°F)64 mm (2.5 inches)83%high
April Weather14°C (57°F)34 mm (1.3 inches)74%high
May Weather19°C (66°F)82 mm (3.2 inches)70%very high
June Weather23°C (74°F)76 mm (3.0 inches)67%very high
July Weather25°C (78°F)56 mm (2.2 inches)65%very high
August Weather26°C (79°F)23 mm (0.9 inches)51%very high
September Weather21°C (70°F)14 mm (0.6 inches)58%high
October Weather14°C (57°F)60 mm (2.4 inches)80%moderate
November Weather8°C (47°F)51 mm (2.0 inches)88%moderate
December Weather3°C (38°F)60 mm (2.4 inches)90%low

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