December Weather in Sway, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Sway, United Kingdom hovers around 8°C (47°F). Expect minimums dipping to 1°C (34°F) and maximums reaching 14°C (57°F). During this time, you can anticipate about 120 mm (4.7 in) of precipitation spread over 15 days, with an average humidity level of a brisk 92%.

December Temperature in Sway

In December in Sway, the average temperature is 8°C (47°F). Maximum can reach 14°C (57°F) and minimum can be as low as 1°C (34°F). Travelers should pack layers to stay comfortable in the cool and variable weather.

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

The chart illustrates December temperature patterns in Sway, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sway, December typically has an average temperature of 8°C (47°F), with highs reaching up to 14°C (57°F) and lows dropping to around 1°C (34°F).

Data source: Temperature data for Sway generated using information from the Copernicus Climate Change Service.

December Precipitation in Sway

In Sway in December, the precipitation amount is 120 mm (4.7 in) spread over 15 days.

December Precipitation Trends in Sway

The chart displays monthly precipitation patterns in Sway, 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 Sway, December typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 15 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Sway

In Sway in December humidity is 92%. With an average temperature of 8°C (47°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities uncomfortable and exhausting for travelers.

December Average Humidity in Sway

This chart illustrates the average monthly humidity levels in Sway, 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 Sway is approximately 92%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sway

In Sway 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 Sway.

Maximum UV Index Levels in Sway for December

The chart shows the monthly maximum UV Index (UVI) for Sway 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 Sway typically reaches 1, which falls under the low exposure category.

Data source: Sway 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 Sway Compares to Other Months

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

This table compares monthly weather conditions in Sway, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	73 mm (2.9 inches)	91%	low
February Weather	7°C (45°F)	78 mm (3.1 inches)	89%	low
March Weather	8°C (47°F)	75 mm (2.9 inches)	86%	moderate
April Weather	10°C (50°F)	37 mm (1.5 inches)	85%	moderate
May Weather	13°C (55°F)	62 mm (2.4 inches)	79%	high
June Weather	16°C (61°F)	78 mm (3.1 inches)	80%	very high
July Weather	18°C (65°F)	62 mm (2.4 inches)	71%	very high
August Weather	18°C (64°F)	82 mm (3.2 inches)	76%	high
September Weather	16°C (61°F)	58 mm (2.3 inches)	82%	high
October Weather	13°C (56°F)	125 mm (4.9 inches)	90%	moderate
November Weather	10°C (50°F)	88 mm (3.5 inches)	92%	low
December Weather	8°C (47°F)	120 mm (4.7 inches)	92%	low