nomadseason

December Weather in Kallby, Finland

Last updated: August 23, 2025

In December, the average temperature in Kallby, Finland hovers around -2°C (28°F). While temperatures can dip as low as -22°C (-7°F), they may reach a maximum of 5°C (42°F). Expect 48 mm (1.9 in) of precipitation spread over about 12 days, with a notable average humidity of 95%. Be prepared for chilly and damp conditions!

December Temperature in Kallby

In December in Kallby, the average temperature is -2°C (28°F). The maximum can reach 5°C (42°F), and the minimum can be as low as -22°C (-7°F). It's essential to pack warm clothing and be prepared for chilly weather when traveling during this time.

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

The chart illustrates December temperature patterns in Kallby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kallby, December typically has an average temperature of -2°C (28°F), with highs reaching up to 5°C (42°F) and lows dropping to around -22°C (-7°F).
JanFebMarAprMayJunJulAugSepOctNovDec242228364658625951423428
Data source: Temperature data for Kallby 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.

December Precipitation in Kallby

In Kallby in December, the precipitation amount is 48 mm (1.9 in) over a span of 12 days.

December Precipitation Trends in Kallby

The chart displays monthly precipitation patterns in Kallby, 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 Kallby, December typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec374040384951708974835548
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Kallby

In Kallby in December humidity is 95%. With an average temperature of -2°C (28°F), this humidity feels like a damp, frigid chill that seeps into your bones, making traveling uncomfortable and the air heavy with a biting cold that dampens your spirits.

December Average Humidity in Kallby

This chart illustrates the average monthly humidity levels in Kallby, 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 Kallby is approximately 95%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Kallby

In Kallby 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 Kallby.

Maximum UV Index Levels in Kallby for December

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

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

This table compares monthly weather conditions in Kallby, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)37 mm (1.4 inches)97%low
February Weather-6°C (22°F)40 mm (1.6 inches)95%low
March Weather-2°C (28°F)40 mm (1.6 inches)92%moderate
April Weather2°C (36°F)38 mm (1.5 inches)85%moderate
May Weather8°C (46°F)49 mm (1.9 inches)77%moderate
June Weather14°C (58°F)51 mm (2.0 inches)74%high
July Weather17°C (63°F)70 mm (2.7 inches)79%high
August Weather15°C (59°F)89 mm (3.5 inches)82%moderate
September Weather10°C (51°F)74 mm (2.9 inches)89%moderate
October Weather5°C (42°F)83 mm (3.3 inches)93%low
November Weather1°C (35°F)55 mm (2.2 inches)93%low
December Weather-2°C (28°F)48 mm (1.9 inches)95%low

Compare Kallby's Climate with Cities Worldwide