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December Weather in Irsta, Sweden

Last updated: August 27, 2025

In December, the average temperature in Irsta, Sweden hovers around 0°C (32°F), making it a chilly month. Expect temperatures to dip as low as -18°C (0°F) at times, with a maximum reaching 9°C (49°F). The region experiences a fair amount of precipitation, averaging 56 mm (2.2 in) over 12 days, contributing to the notably high average humidity of 90%. Prepare for a wintery mix and stay warm!

December Temperature in Irsta

In December in Irsta, the average temperature is 0°C (32°F). Maximums can reach 9°C (49°F), and minimums can be as low as -18°C (0°F). Travelers should prepare for chilly weather and pack warm clothing to enjoy their visit comfortably.

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

The chart illustrates December temperature patterns in Irsta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Irsta, December typically has an average temperature of 0°C (32°F), with highs reaching up to 9°C (49°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec302934415162646154453732
Data source: Temperature data for Irsta 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 Irsta

In Irsta in December, the precipitation amount is 56 mm (2.2 in) spread over 12 days.

December Precipitation Trends in Irsta

The chart displays monthly precipitation patterns in Irsta, 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 Irsta, December typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec343239306068627758754656
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Irsta

In Irsta in December, humidity is 90%. With an average temperature of 0°C (32°F), this humidity feels like an icy grip on your skin, making the air feel heavy and damp, which can turn traveling into a chilling experience where every step is met with a bone-cold embrace.

December Average Humidity in Irsta

This chart illustrates the average monthly humidity levels in Irsta, 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 Irsta 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 Irsta

In Irsta 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 Irsta.

Maximum UV Index Levels in Irsta for December

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

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

This table compares monthly weather conditions in Irsta, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)34 mm (1.3 inches)91%low
February Weather-2°C (29°F)32 mm (1.3 inches)89%low
March Weather1°C (34°F)39 mm (1.6 inches)88%moderate
April Weather5°C (41°F)30 mm (1.2 inches)82%moderate
May Weather11°C (51°F)60 mm (2.4 inches)71%moderate
June Weather17°C (62°F)68 mm (2.7 inches)69%high
July Weather18°C (64°F)61 mm (2.4 inches)67%high
August Weather16°C (62°F)77 mm (3.0 inches)72%moderate
September Weather12°C (54°F)58 mm (2.3 inches)83%moderate
October Weather7°C (45°F)75 mm (3.0 inches)89%low
November Weather3°C (38°F)46 mm (1.8 inches)91%low
December Weather0°C (32°F)56 mm (2.2 inches)90%low

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