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December Weather in Scalloway, United Kingdom

Last updated: August 27, 2025

In Scalloway, United Kingdom, the average temperature in December hovers around 7°C (45°F). Expect a minimum of 3°C (37°F) and a maximum of 11°C (52°F), making it a cool month. With 137 mm (5.4 in) of precipitation spread over 25 days, it's a quite wet period, accompanied by an average humidity of 78%. Make sure to pack your umbrella!

December Temperature in Scalloway

In December in Scalloway, the average temperature is 7°C (45°F), with maximums reaching 11°C (52°F) and minimums dipping as low as 3°C (37°F). This mild climate makes it a great time for travelers to explore the area comfortably.

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

The chart illustrates December temperature patterns in Scalloway, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Scalloway, December typically has an average temperature of 7°C (45°F), with highs reaching up to 11°C (52°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec444343434651545553504745
Data source: Temperature data for Scalloway 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 Scalloway

In Scalloway in December, the precipitation amount is 137 mm (5.4 in) spread over the course of 25 days.

December Precipitation Trends in Scalloway

The chart displays monthly precipitation patterns in Scalloway, 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 Scalloway, December typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec96981035147547074115146133137
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Scalloway

In Scalloway in December, humidity is 78%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and necessitating cozy, layered clothing for comfort while traveling.

December Average Humidity in Scalloway

This chart illustrates the average monthly humidity levels in Scalloway, 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 Scalloway is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%81%82%84%84%89%87%87%87%85%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Scalloway

In Scalloway 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 Scalloway.

Maximum UV Index Levels in Scalloway for December

The chart shows the monthly maximum UV Index (UVI) for Scalloway 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 Scalloway typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112457654211
Data source: Scalloway 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 Scalloway Compares to Other Months

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

This table compares monthly weather conditions in Scalloway, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)96 mm (3.8 inches)79%low
February Weather6°C (43°F)97 mm (3.8 inches)79%low
March Weather6°C (43°F)103 mm (4.1 inches)81%low
April Weather6°C (44°F)51 mm (2.0 inches)82%moderate
May Weather8°C (47°F)47 mm (1.8 inches)84%moderate
June Weather10°C (51°F)53 mm (2.1 inches)84%high
July Weather12°C (54°F)69 mm (2.7 inches)89%high
August Weather13°C (55°F)74 mm (2.9 inches)87%moderate
September Weather12°C (54°F)115 mm (4.5 inches)87%moderate
October Weather10°C (51°F)146 mm (5.8 inches)87%low
November Weather8°C (47°F)133 mm (5.2 inches)85%low
December Weather7°C (45°F)137 mm (5.4 inches)78%low

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