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September Weather in Jieznas, Lithuania

Last updated: August 23, 2025

In Jieznas, Lithuania, the average temperature in September reaches a comfortable 14°C (57°F). However, be prepared for temperature swings, as it can dip to a chilly -1°C (30°F) at night and soar to a warm 27°C (81°F) during the day. With 70 mm (2.8 in) of precipitation spread across 11 days, and an average humidity level of 83%, this month brings a blend of refreshing rain and humid days.

September Temperature in Jieznas

In September in Jieznas, the average temperature is 14°C (57°F), with maximums reaching 27°C (81°F) and minimums dipping as low as -1°C (30°F). Be prepared for a range of weather conditions when traveling during this month!

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

The chart illustrates September temperature patterns in Jieznas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jieznas, September typically has an average temperature of 14°C (57°F), with highs reaching up to 27°C (81°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec293036455465666557484032
Data source: Temperature data for Jieznas 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 Jieznas

In Jieznas in September, the precipitation amount is 70 mm (2.8 in) distributed over 11 days.

September Precipitation Trends in Jieznas

The chart displays monthly precipitation patterns in Jieznas, 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 Jieznas, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec503844476557889070654758
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jieznas

In Jieznas in September, humidity is 83%. With an average temperature of 14°C (57°F), this humidity feels like you're stepping into a warm, damp embrace that can make outdoor activities quite uncomfortable, often leaving you sweaty and exhausted if you're not prepared with plenty of water and breathable clothing.

September Average Humidity in Jieznas

This chart illustrates the average monthly humidity levels in Jieznas, 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 Jieznas is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%92%90%86%72%74%76%74%83%91%93%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jieznas

In Jieznas in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Jieznas.

Maximum UV Index Levels in Jieznas for September

The chart shows the monthly maximum UV Index (UVI) for Jieznas 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 Jieznas typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124567765321
Data source: Jieznas 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 Jieznas Compares to Other Months

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

This table compares monthly weather conditions in Jieznas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)50 mm (2.0 inches)94%low
February Weather-1°C (30°F)38 mm (1.5 inches)92%low
March Weather2°C (36°F)44 mm (1.7 inches)90%moderate
April Weather7°C (45°F)47 mm (1.8 inches)86%moderate
May Weather12°C (55°F)65 mm (2.6 inches)72%high
June Weather18°C (65°F)57 mm (2.2 inches)74%high
July Weather19°C (66°F)88 mm (3.5 inches)76%high
August Weather18°C (65°F)90 mm (3.5 inches)74%high
September Weather14°C (57°F)70 mm (2.8 inches)83%moderate
October Weather9°C (48°F)65 mm (2.6 inches)91%moderate
November Weather4°C (40°F)47 mm (1.9 inches)93%low
December Weather0°C (32°F)58 mm (2.3 inches)95%low

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