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December Weather in Kullaa, Finland

Last updated: August 23, 2025

In December, the average temperature in Kullaa, Finland hovers around -1°C (30°F). Temperatures can plunge as low as -20°C (-3°F), while reaching a maximum of 6°C (43°F). Expect about 64 mm (2.5 in) of precipitation spread over 13 days, with an average humidity level at a high 89%.

December Temperature in Kullaa

In December in Kullaa, the average temperature is -1°C (30°F), with maximums reaching 6°C (43°F) and minimums dropping as low as -20°C (-3°F). This chilly weather makes it essential for travelers to pack warm clothing and enjoy cozy indoor activities.

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

The chart illustrates December temperature patterns in Kullaa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kullaa, December typically has an average temperature of -1°C (30°F), with highs reaching up to 6°C (43°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec272430395061646152433630
Data source: Temperature data for Kullaa 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 Kullaa

In Kullaa in December, the precipitation amount is 64 mm (2.5 in) spread over 13 days.

December Precipitation Trends in Kullaa

The chart displays monthly precipitation patterns in Kullaa, 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 Kullaa, December typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec4341444247608610271795964
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kullaa

In Kullaa in December humidity is 89%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that wraps around you, making outdoor travel uncomfortable and brisk, as the cold air sharpens the dampness, leaving you feeling colder than the thermometer suggests.

December Average Humidity in Kullaa

This chart illustrates the average monthly humidity levels in Kullaa, 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 Kullaa is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%89%85%77%78%78%79%86%90%91%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kullaa

In Kullaa 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 Kullaa.

Maximum UV Index Levels in Kullaa for December

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

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

This table compares monthly weather conditions in Kullaa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)43 mm (1.7 inches)92%low
February Weather-4°C (25°F)41 mm (1.6 inches)90%low
March Weather-1°C (31°F)44 mm (1.7 inches)89%moderate
April Weather4°C (39°F)42 mm (1.7 inches)85%moderate
May Weather10°C (50°F)47 mm (1.9 inches)77%moderate
June Weather16°C (61°F)60 mm (2.3 inches)78%high
July Weather18°C (64°F)86 mm (3.4 inches)78%high
August Weather16°C (61°F)102 mm (4.0 inches)79%moderate
September Weather11°C (52°F)71 mm (2.8 inches)86%moderate
October Weather6°C (43°F)79 mm (3.1 inches)90%low
November Weather2°C (37°F)59 mm (2.3 inches)91%low
December Weather-1°C (30°F)64 mm (2.5 inches)89%low

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