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September Weather in Jelgava, Latvia

Last updated: August 23, 2025

In Jelgava, Latvia, the average temperature in September hovers around 14°C (57°F). Expect a minimum of 1°C (34°F) and a pleasant maximum of 28°C (82°F). During this month, precipitation averages at 67 mm (2.6 in) over about 13 days, while the average humidity sits at a cozy 87%. Prepare accordingly for a mix of warm days and refreshing showers!

September Temperature in Jelgava

In September in Jelgava, the average temperature is 14°C (57°F). Maximums can reach 28°C (82°F) and minimums can be as low as 1°C (34°F). This variation in temperature makes it essential to pack layers for your travels.

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

The chart illustrates September temperature patterns in Jelgava, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jelgava, September typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (82°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec303035445364666457484032
Data source: Temperature data for Jelgava 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 Jelgava

In Jelgava in September, the precipitation amount is 67 mm (2.6 in) spread over 13 days.

September Precipitation Trends in Jelgava

The chart displays monthly precipitation patterns in Jelgava, 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 Jelgava, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec413546375957847967655247
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jelgava

In Jelgava in September humidity is 87%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making every breath feel heavy and sticky, which can be quite challenging for travelers exploring the city.

September Average Humidity in Jelgava

This chart illustrates the average monthly humidity levels in Jelgava, 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 Jelgava is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%90%87%72%76%76%80%87%91%92%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jelgava

In Jelgava 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 Jelgava for better planning.

Maximum UV Index Levels in Jelgava for September

The chart shows the monthly maximum UV Index (UVI) for Jelgava 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 Jelgava typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567764211
Data source: Jelgava 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 Jelgava Compares to Other Months

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

This table compares monthly weather conditions in Jelgava, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)41 mm (1.6 inches)93%low
February Weather-1°C (30°F)35 mm (1.4 inches)91%low
March Weather2°C (35°F)46 mm (1.8 inches)90%moderate
April Weather7°C (44°F)37 mm (1.5 inches)87%moderate
May Weather12°C (54°F)59 mm (2.3 inches)72%high
June Weather18°C (64°F)57 mm (2.2 inches)76%high
July Weather19°C (66°F)84 mm (3.3 inches)76%high
August Weather18°C (64°F)79 mm (3.1 inches)80%high
September Weather14°C (57°F)67 mm (2.6 inches)87%moderate
October Weather9°C (48°F)65 mm (2.6 inches)91%low
November Weather5°C (41°F)51 mm (2.0 inches)92%low
December Weather0°C (33°F)47 mm (1.8 inches)93%low

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