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September Weather in Alu, Estonia

Last updated: August 23, 2025

In September, the average temperature in Alu, Estonia hovers around 12°C (54°F). You'll experience a pleasant range, with minimums dropping to 0°C (32°F) and maximums reaching 25°C (77°F). Expect about 75 mm (2.9 in) of precipitation spread over 14 days, contributing to the region’s high average humidity of 87%. Stay prepared for a mix of chilly and mild days!

September Temperature in Alu

In September in Alu, the average temperature is 12°C (54°F), with maximums reaching 25°C (77°F) and minimums dropping as low as 0°C (32°F). This mild weather makes Alu an ideal destination for travelers seeking a comfortable climate.

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

The chart illustrates September temperature patterns in Alu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alu, September typically has an average temperature of 12°C (54°F), with highs reaching up to 25°C (77°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec282732415161646154453830
Data source: Temperature data for Alu 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 Alu

In Alu in September, the total precipitation amount is 75 mm (2.9 in) accumulated over a period of 14 days.

September Precipitation Trends in Alu

The chart displays monthly precipitation patterns in Alu, 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 Alu, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec4248504558647910875925454
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alu

In Alu in September humidity is 87%. With an average temperature of 12°C (54°F), this humidity feels like a damp embrace, making it quite uncomfortable for traveling, as the air feels heavy and can quickly sap your energy as you explore the sights.

September Average Humidity in Alu

This chart illustrates the average monthly humidity levels in Alu, 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 Alu is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%91%90%87%76%80%80%83%87%90%91%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Alu

In Alu in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Alu for better planning.

Maximum UV Index Levels in Alu for September

The chart shows the monthly maximum UV Index (UVI) for Alu 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 Alu typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457764211
Data source: Alu 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 Alu Compares to Other Months

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

This table compares monthly weather conditions in Alu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)42 mm (1.7 inches)92%low
February Weather-3°C (27°F)48 mm (1.9 inches)91%low
March Weather0°C (32°F)50 mm (2.0 inches)90%moderate
April Weather5°C (41°F)45 mm (1.8 inches)87%moderate
May Weather10°C (51°F)58 mm (2.3 inches)76%moderate
June Weather16°C (61°F)64 mm (2.5 inches)80%high
July Weather18°C (64°F)79 mm (3.1 inches)80%high
August Weather16°C (62°F)108 mm (4.2 inches)83%high
September Weather12°C (54°F)75 mm (2.9 inches)87%moderate
October Weather7°C (46°F)92 mm (3.6 inches)90%low
November Weather3°C (38°F)54 mm (2.1 inches)91%low
December Weather-1°C (31°F)54 mm (2.1 inches)90%low

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