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September Weather in Mierlau, Romania

Last updated: August 27, 2025

In Mierlau, Romania, the average temperature in September hovers around 18°C (64°F), with a delightful range from a crisp 2°C (37°F) to a warm 34°C (93°F). Expect some light rainfall, with 44 mm (1.7 in) of precipitation spread over 7 days, while the air maintains an average humidity of 68%. Perfect for enjoying the diverse beauty of the season!

September Temperature in Mierlau

In September in Mierlau, the average temperature is 18°C (64°F). The maximum can reach 34°C (93°F), and the minimum can be as low as 2°C (37°F). This variation makes it essential for travelers to pack layers to adapt to the changing temperatures throughout the day.

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

The chart illustrates September temperature patterns in Mierlau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mierlau, September typically has an average temperature of 18°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec313843536170727464544537
Data source: Temperature data for Mierlau 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 Mierlau

In Mierlau in September, the precipitation amount is 44 mm (1.7 in) spread over a duration of 7 days.

September Precipitation Trends in Mierlau

The chart displays monthly precipitation patterns in Mierlau, 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 Mierlau, September typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec506253518399634444495583
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mierlau

In Mierlau in September, humidity is 68%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making for a slightly muggy experience that can leave you feeling sticky as you explore, so it’s best to stay hydrated and take frequent breaks in the shade.

September Average Humidity in Mierlau

This chart illustrates the average monthly humidity levels in Mierlau, 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 Mierlau is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%83%75%72%72%71%62%68%84%90%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mierlau

In Mierlau 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 Mierlau.

Maximum UV Index Levels in Mierlau for September

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

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

This table compares monthly weather conditions in Mierlau, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)50 mm (2.0 inches)89%low
February Weather3°C (38°F)62 mm (2.4 inches)87%moderate
March Weather6°C (44°F)53 mm (2.1 inches)83%moderate
April Weather12°C (53°F)51 mm (2.0 inches)75%high
May Weather16°C (61°F)83 mm (3.3 inches)72%very high
June Weather21°C (70°F)99 mm (3.9 inches)72%very high
July Weather22°C (72°F)63 mm (2.5 inches)71%very high
August Weather23°C (74°F)44 mm (1.7 inches)62%very high
September Weather18°C (64°F)44 mm (1.7 inches)68%high
October Weather12°C (55°F)49 mm (1.9 inches)84%moderate
November Weather7°C (46°F)55 mm (2.2 inches)90%low
December Weather3°C (38°F)83 mm (3.3 inches)92%low

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