nomadseason

September Weather in Suolahti, Finland

Last updated: August 23, 2025

In Suolahti, Finland, the average temperature in September hovers around 10°C (50°F). Expect chilly lows dipping to -3°C (27°F) and pleasant highs reaching up to 22°C (72°F). Be prepared for 71 mm (2.8 in) of precipitation spread over 11 days, and don't forget your umbrella as humidity levels average a cozy 91%!

September Temperature in Suolahti

In September in Suolahti, the average temperature is 10°C (50°F). Maximums can reach 22°C (72°F) and minimums can be as low as -3°C (27°F). Be prepared for a range of temperatures during your travels, from mild to quite chilly.

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

The chart illustrates September temperature patterns in Suolahti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Suolahti, September typically has an average temperature of 10°C (50°F), with highs reaching up to 22°C (72°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec222127364860635950413426
Data source: Temperature data for Suolahti generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Suolahti

In Suolahti in September, the precipitation amount is 71 mm (2.8 in) distributed over 11 days.

September Precipitation Trends in Suolahti

The chart displays monthly precipitation patterns in Suolahti, 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 Suolahti, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec464340446356688171746164
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Suolahti

In Suolahti in September, humidity is 91%. With an average temperature of 10°C (50°F), this humidity feels like an enveloping dampness that makes traveling a bit uncomfortable, as the moisture clings to your skin and dampens your clothes, soaking up any residual warmth from the cool air.

September Average Humidity in Suolahti

This chart illustrates the average monthly humidity levels in Suolahti, 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 Suolahti is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec99%97%95%87%78%74%80%85%91%95%94%98%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Suolahti

In Suolahti in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Suolahti, you can check the information here.

Maximum UV Index Levels in Suolahti for September

The chart shows the monthly maximum UV Index (UVI) for Suolahti 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 Suolahti typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Suolahti 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 Suolahti Compares to Other Months

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

This table compares monthly weather conditions in Suolahti, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (22°F)46 mm (1.8 inches)99%low
February Weather-6°C (21°F)43 mm (1.7 inches)97%low
March Weather-3°C (27°F)40 mm (1.6 inches)95%moderate
April Weather2°C (36°F)44 mm (1.7 inches)87%moderate
May Weather9°C (48°F)63 mm (2.5 inches)78%moderate
June Weather16°C (60°F)56 mm (2.2 inches)74%high
July Weather17°C (63°F)68 mm (2.7 inches)80%high
August Weather15°C (59°F)81 mm (3.2 inches)85%moderate
September Weather10°C (50°F)71 mm (2.8 inches)91%moderate
October Weather5°C (41°F)74 mm (2.9 inches)95%low
November Weather1°C (34°F)61 mm (2.4 inches)94%low
December Weather-3°C (26°F)64 mm (2.5 inches)98%low

Compare Suolahti's Climate with Cities Worldwide