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September Weather in Orissaare, Estonia

Last updated: August 23, 2025

In September, the average temperature in Orissaare, Estonia hovers around 14°C (57°F). Expect a minimum of 5°C (41°F) and a maximum of 23°C (74°F), making it a pleasantly mild month. However, you might want to carry an umbrella, as 62 mm (2.5 in) of precipitation is spread over 12 days. With an average humidity of 87%, be prepared for a bit of dampness in the air!

September Temperature in Orissaare

In September in Orissaare, the average temperature is 14°C (57°F). Maximum can reach 23°C (74°F) and minimum can be as low as 5°C (41°F). This makes it a comfortable time for travelers looking to explore without extreme heat or cold.

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

The chart illustrates September temperature patterns in Orissaare, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Orissaare, September typically has an average temperature of 14°C (57°F), with highs reaching up to 23°C (74°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec323034415162656457494235
Data source: Temperature data for Orissaare 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 Orissaare

In Orissaare in September, the precipitation amount is 62 mm (2.5 in) over the course of 12 days.

September Precipitation Trends in Orissaare

The chart displays monthly precipitation patterns in Orissaare, 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 Orissaare, September typically receives around 62 mm (2.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec414449333847617862906353
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Orissaare

In Orissaare 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 Orissaare

This chart illustrates the average monthly humidity levels in Orissaare, 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 Orissaare 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 Orissaare

In Orissaare 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 Orissaare for better planning.

Maximum UV Index Levels in Orissaare for September

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

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

This table compares monthly weather conditions in Orissaare, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)41 mm (1.6 inches)92%low
February Weather-1°C (30°F)44 mm (1.7 inches)91%low
March Weather1°C (34°F)49 mm (1.9 inches)90%moderate
April Weather5°C (41°F)33 mm (1.3 inches)87%moderate
May Weather11°C (51°F)38 mm (1.5 inches)76%moderate
June Weather17°C (62°F)47 mm (1.8 inches)80%high
July Weather19°C (66°F)61 mm (2.4 inches)80%high
August Weather18°C (65°F)78 mm (3.1 inches)83%high
September Weather14°C (57°F)62 mm (2.5 inches)87%moderate
October Weather9°C (49°F)90 mm (3.6 inches)90%low
November Weather6°C (42°F)62 mm (2.5 inches)91%low
December Weather2°C (35°F)53 mm (2.1 inches)90%low

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