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December Weather in Jaerna, Sweden

Last updated: August 27, 2025

In December, the average temperature in Jaerna, Sweden is a brisk 1°C (34°F). Expect a range from a chilly -19°C (-2°F) at its lowest to a milder 9°C (49°F) at its peak. With 14 days of precipitation totaling 61 mm (2.4 in) and a high average humidity of 90%, prepare for a damp, cold month in this region.

December Temperature in Jaerna

In December in Jaerna, the average temperature is 1°C (34°F). Maximums can reach 9°C (49°F), while minimums can plummet to as low as -19°C (-2°F). It's essential to pack warm clothing and be prepared for chilly weather if you plan to visit during this time.

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

The chart illustrates December temperature patterns in Jaerna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jaerna, December typically has an average temperature of 1°C (34°F), with highs reaching up to 9°C (49°F) and lows dropping to around -19°C (-2°F).
JanFebMarAprMayJunJulAugSepOctNovDec323135415162646355474034
Data source: Temperature data for Jaerna 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 Jaerna

In Jaerna in December, the total precipitation amount is 61 mm (2.4 in) over a span of 14 days.

December Precipitation Trends in Jaerna

The chart displays monthly precipitation patterns in Jaerna, 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 Jaerna, December typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec403444275653607456684461
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Jaerna

In Jaerna in December, humidity is 90%. With an average temperature of 1°C (34°F), this humidity feels like you're wrapped in a cold, damp blanket, making travel uncomfortable and requiring extra layers to combat the chill.

December Average Humidity in Jaerna

This chart illustrates the average monthly humidity levels in Jaerna, 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 Jaerna is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%88%82%71%69%67%73%83%89%91%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Jaerna

In Jaerna 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 Jaerna.

Maximum UV Index Levels in Jaerna for December

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

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

This table compares monthly weather conditions in Jaerna, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)40 mm (1.6 inches)91%low
February Weather-1°C (31°F)34 mm (1.3 inches)89%low
March Weather2°C (36°F)44 mm (1.7 inches)88%moderate
April Weather5°C (42°F)27 mm (1.1 inches)82%moderate
May Weather10°C (51°F)55 mm (2.2 inches)71%moderate
June Weather17°C (62°F)53 mm (2.1 inches)69%high
July Weather18°C (65°F)60 mm (2.4 inches)67%high
August Weather17°C (63°F)74 mm (2.9 inches)72%moderate
September Weather13°C (55°F)56 mm (2.2 inches)83%moderate
October Weather8°C (47°F)68 mm (2.7 inches)89%low
November Weather4°C (40°F)44 mm (1.7 inches)91%low
December Weather1°C (34°F)61 mm (2.4 inches)90%low

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