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September Weather in Karksi, Estonia

Last updated: August 23, 2025

In September, the average temperature in Karksi, Estonia is a moderate 12°C (55°F). Expect a minimum of -2°C (29°F) and a maximum of 26°C (79°F) throughout the month. With an average precipitation of 73 mm (2.9 in) spread over 13 days, be prepared for some rain. Additionally, the average humidity remains high at 88%, contributing to a cozy yet damp atmosphere.

September Temperature in Karksi

In September in Karksi, the average temperature is 12°C (55°F). Maximum temperatures can reach 26°C (79°F), while minima can drop as low as -2°C (29°F). Be prepared for a wide range of temperatures during your travels, making layering essential for comfort throughout the day.

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

The chart illustrates September temperature patterns in Karksi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karksi, September typically has an average temperature of 12°C (55°F), with highs reaching up to 26°C (79°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec282733415162646254453830
Data source: Temperature data for Karksi 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 Karksi

In Karksi in September, the precipitation amount is 73 mm (2.9 in) over the course of 13 days.

September Precipitation Trends in Karksi

The chart displays monthly precipitation patterns in Karksi, 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 Karksi, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec394555475077808873806052
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Karksi

In Karksi in September humidity is 88%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration more challenging and requiring extra layers for comfort.

September Average Humidity in Karksi

This chart illustrates the average monthly humidity levels in Karksi, 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 Karksi is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%92%89%87%70%77%78%81%88%92%93%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Karksi

In Karksi 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 Karksi for better planning.

Maximum UV Index Levels in Karksi for September

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

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

This table compares monthly weather conditions in Karksi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)39 mm (1.5 inches)94%low
February Weather-3°C (27°F)45 mm (1.8 inches)92%low
March Weather0°C (33°F)54 mm (2.1 inches)89%moderate
April Weather5°C (42°F)47 mm (1.8 inches)87%moderate
May Weather11°C (52°F)50 mm (2.0 inches)70%moderate
June Weather16°C (62°F)77 mm (3.0 inches)77%high
July Weather18°C (64°F)80 mm (3.1 inches)78%high
August Weather16°C (62°F)88 mm (3.5 inches)81%high
September Weather12°C (55°F)73 mm (2.9 inches)88%moderate
October Weather7°C (46°F)80 mm (3.2 inches)92%low
November Weather3°C (38°F)60 mm (2.4 inches)93%low
December Weather-1°C (30°F)52 mm (2.0 inches)93%low

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