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September Weather in Costache Negri, Romania

Last updated: August 27, 2025

In September, the average temperature in Costache Negri, Romania is a mild 19°C (66°F), with daily variations ranging from a cool 2°C (36°F) to a warm 34°C (93°F). Expect 31 mm (1.2 in) of precipitation over approximately 4 days, contributing to an average humidity of 61%. Enjoy the comfortable climate while exploring this beautiful destination!

September Temperature in Costache Negri

In September in Costache Negri, the average temperature is 19°C (66°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 2°C (36°F). Travelers should be prepared for a range of temperatures, making layers essential for comfort during the day and cooler evenings.

September Weather in Costache Negri: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Costache Negri, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Costache Negri, September typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec323643526371747566554436
Data source: Temperature data for Costache Negri 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 Costache Negri

In Costache Negri in September, the total precipitation amount is 31 mm (1.2 in) over a span of 4 days.

September Precipitation Trends in Costache Negri

The chart displays monthly precipitation patterns in Costache Negri, 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 Costache Negri, September typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec2734384754113632431423256
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Costache Negri

In Costache Negri in September, humidity is 61%. With an average temperature of 19°C (66°F), this humidity feels like a warm, gentle embrace, making it ideal for leisurely exploration, though you might want to keep a light jacket handy for cooler evenings.

September Average Humidity in Costache Negri

This chart illustrates the average monthly humidity levels in Costache Negri, 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 Costache Negri is approximately 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%83%80%76%73%68%65%53%61%77%85%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Costache Negri

In Costache Negri 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 Costache Negri.

Maximum UV Index Levels in Costache Negri for September

The chart shows the monthly maximum UV Index (UVI) for Costache Negri 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 Costache Negri typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Costache Negri 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 Costache Negri Compares to Other Months

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

This table compares monthly weather conditions in Costache Negri, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)26 mm (1.0 inches)87%low
February Weather2°C (37°F)34 mm (1.3 inches)83%moderate
March Weather6°C (43°F)38 mm (1.5 inches)80%moderate
April Weather11°C (53°F)47 mm (1.9 inches)76%high
May Weather17°C (63°F)54 mm (2.1 inches)73%very high
June Weather22°C (71°F)113 mm (4.4 inches)68%very high
July Weather23°C (74°F)63 mm (2.5 inches)65%very high
August Weather24°C (75°F)24 mm (0.9 inches)53%very high
September Weather19°C (66°F)31 mm (1.2 inches)61%high
October Weather13°C (55°F)42 mm (1.7 inches)77%moderate
November Weather7°C (45°F)32 mm (1.3 inches)85%moderate
December Weather2°C (36°F)56 mm (2.2 inches)86%low

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