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January Weather in Seinaejoki, Finland

Last updated: August 23, 2025

In January, the average temperature in Seinaejoki, Finland hovers around -4°C (24°F). Expect chilly conditions with minimum temperatures plunging to -28°C (-19°F), while daytime highs can reach up to 8°C (46°F). The month also sees 37 mm (1.4 in) of precipitation spread over 9 days, contributing to a notably high average humidity of 97%. Prepare for a brisk and damp experience!

January Temperature in Seinaejoki

In January in Seinaejoki, the average temperature is -4°C (24°F). The maximum can reach 8°C (46°F) and the minimum can be as low as -28°C (-19°F). This range of temperatures suggests that travelers should prepare for cold weather and pack accordingly.

January Weather in Seinaejoki: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Seinaejoki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seinaejoki, January typically has an average temperature of -4°C (24°F), with highs reaching up to 8°C (46°F) and lows dropping to around -28°C (-19°F).
JanFebMarAprMayJunJulAugSepOctNovDec242229384860625950413427
Data source: Temperature data for Seinaejoki 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.

January Precipitation in Seinaejoki

In Seinaejoki in January, the total precipitation amount is 37 mm (1.4 in) spread across 9 days.

January Precipitation Trends in Seinaejoki

The chart displays monthly precipitation patterns in Seinaejoki, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Seinaejoki, January typically receives around 37 mm (1.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec373941446061599071755847
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Seinaejoki

In Seinaejoki in January humidity is 97%. With an average temperature of -4°C (24°F), this humidity feels like a biting chill that seeps through your clothing, making outdoor exploration uncomfortable and prompting travelers to seek refuge indoors more often than not.

January Average Humidity in Seinaejoki

This chart illustrates the average monthly humidity levels in Seinaejoki, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Seinaejoki is approximately 97%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%92%85%77%74%79%82%89%93%93%95%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Seinaejoki

In Seinaejoki in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Seinaejoki.

Maximum UV Index Levels in Seinaejoki for January

The chart shows the monthly maximum UV Index (UVI) for Seinaejoki in January, 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 January, the maximum UV index in Seinaejoki typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Seinaejoki January 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 January Weather in Seinaejoki Compares to Other Months

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

This table compares monthly weather conditions in Seinaejoki, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)37 mm (1.4 inches)97%low
February Weather-5°C (22°F)39 mm (1.5 inches)95%low
March Weather-2°C (29°F)41 mm (1.6 inches)92%moderate
April Weather3°C (38°F)44 mm (1.7 inches)85%moderate
May Weather9°C (49°F)60 mm (2.3 inches)77%moderate
June Weather15°C (60°F)61 mm (2.4 inches)74%high
July Weather17°C (63°F)59 mm (2.3 inches)79%high
August Weather15°C (59°F)90 mm (3.6 inches)82%moderate
September Weather10°C (50°F)71 mm (2.8 inches)89%moderate
October Weather5°C (41°F)75 mm (2.9 inches)93%low
November Weather1°C (34°F)58 mm (2.3 inches)93%low
December Weather-3°C (28°F)47 mm (1.9 inches)95%low

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