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December Weather in Tarvasjoki, Finland

Last updated: August 23, 2025

In December, the average temperature in Tarvasjoki, Finland hovers around -1°C (31°F), with extremes reaching as low as -20°C (-4°F) and peaking at 7°C (44°F). Expect about 70 mm (2.7 in) of precipitation over 13 days, contributing to an average humidity level of 95%. Make sure to prepare for a chilly and damp month!

December Temperature in Tarvasjoki

In December in Tarvasjoki, the average temperature is -1°C (31°F). Maximum can reach 7°C (44°F) and minimum can be as low as -20°C (-4°F). It's essential to pack warm clothing and prepare for chilly conditions when traveling during this time.

December Weather in Tarvasjoki: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Tarvasjoki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tarvasjoki, December typically has an average temperature of -1°C (31°F), with highs reaching up to 7°C (44°F) and lows dropping to around -20°C (-4°F).
JanFebMarAprMayJunJulAugSepOctNovDec282531395061646153443830
Data source: Temperature data for Tarvasjoki 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.

December Precipitation in Tarvasjoki

In Tarvasjoki in December, the precipitation amount is 70 mm (2.7 in) over the course of 13 days.

December Precipitation Trends in Tarvasjoki

The chart displays monthly precipitation patterns in Tarvasjoki, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Tarvasjoki, December typically receives around 70 mm (2.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec494346375449758957755270
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Tarvasjoki

In Tarvasjoki in December, humidity is 95%. With an average temperature of -1°C (31°F), this humidity feels like an icy weight on your skin, making travel uncomfortable and every breath a challenge as the cold dampness clings to your clothes.

December Average Humidity in Tarvasjoki

This chart illustrates the average monthly humidity levels in Tarvasjoki, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Tarvasjoki is approximately 95%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%93%87%75%75%80%83%90%93%94%95%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Tarvasjoki

In Tarvasjoki in December, 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 Tarvasjoki.

Maximum UV Index Levels in Tarvasjoki for December

The chart shows the monthly maximum UV Index (UVI) for Tarvasjoki in December, 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 December, the maximum UV index in Tarvasjoki typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457754211
Data source: Tarvasjoki December 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 December Weather in Tarvasjoki Compares to Other Months

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

This table compares monthly weather conditions in Tarvasjoki, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)49 mm (1.9 inches)97%low
February Weather-4°C (26°F)43 mm (1.7 inches)95%low
March Weather0°C (31°F)46 mm (1.8 inches)93%moderate
April Weather4°C (40°F)37 mm (1.4 inches)86%moderate
May Weather10°C (50°F)54 mm (2.1 inches)75%moderate
June Weather16°C (62°F)49 mm (1.9 inches)75%high
July Weather18°C (64°F)75 mm (2.9 inches)80%high
August Weather16°C (62°F)89 mm (3.5 inches)83%moderate
September Weather12°C (53°F)57 mm (2.2 inches)90%moderate
October Weather7°C (44°F)75 mm (2.9 inches)93%low
November Weather3°C (38°F)52 mm (2.1 inches)94%low
December Weather-1°C (31°F)70 mm (2.7 inches)95%low

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