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December Weather in Kirkkonummi, Finland

Last updated: August 23, 2025

In December, the average temperature in Kirkkonummi, Finland hovers around 1°C (35°F), with a chilly minimum of -10°C (15°F) and a maximum of 7°C (45°F). Be prepared for frequent showers, as the area receives 82 mm (3.2 in) of precipitation over approximately 17 days. With an average humidity of 90%, the atmosphere can feel quite damp, making it essential to dress warmly and comfortably during your visit!

December Temperature in Kirkkonummi

In December in Kirkkonummi, the average temperature is 1°C (35°F). Maximums can reach 7°C (45°F) and minimums can be as low as -10°C (15°F). Be sure to dress warmly and prepare for cold weather while exploring the beautiful sights of Kirkkonummi.

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

The chart illustrates December temperature patterns in Kirkkonummi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kirkkonummi, December typically has an average temperature of 1°C (35°F), with highs reaching up to 7°C (45°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec312932374658636356484134
Data source: Temperature data for Kirkkonummi 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 Kirkkonummi

In Kirkkonummi in December, the precipitation amount is 82 mm (3.2 in) over the course of 17 days.

December Precipitation Trends in Kirkkonummi

The chart displays monthly precipitation patterns in Kirkkonummi, 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 Kirkkonummi, December typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec6152543849487382831238682
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kirkkonummi

In Kirkkonummi in December humidity is 90%. With an average temperature of 1°C (35°F), this humidity feels like an icy blanket clinging to your skin, making travel uncomfortable and every breath a struggle against the damp chill.

December Average Humidity in Kirkkonummi

This chart illustrates the average monthly humidity levels in Kirkkonummi, 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 Kirkkonummi is approximately 90%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Kirkkonummi

In Kirkkonummi 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 Kirkkonummi.

Maximum UV Index Levels in Kirkkonummi for December

The chart shows the monthly maximum UV Index (UVI) for Kirkkonummi 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 Kirkkonummi typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Kirkkonummi 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 Kirkkonummi Compares to Other Months

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

This table compares monthly weather conditions in Kirkkonummi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)61 mm (2.4 inches)92%low
February Weather-2°C (29°F)52 mm (2.1 inches)91%low
March Weather0°C (32°F)54 mm (2.1 inches)90%moderate
April Weather3°C (38°F)38 mm (1.5 inches)87%moderate
May Weather8°C (46°F)49 mm (1.9 inches)76%moderate
June Weather14°C (58°F)48 mm (1.9 inches)80%high
July Weather17°C (63°F)73 mm (2.9 inches)80%high
August Weather17°C (63°F)82 mm (3.2 inches)83%moderate
September Weather13°C (56°F)83 mm (3.3 inches)87%moderate
October Weather9°C (48°F)122 mm (4.8 inches)90%low
November Weather5°C (42°F)86 mm (3.4 inches)91%low
December Weather1°C (35°F)82 mm (3.2 inches)90%low

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