January Weather in Mullion, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Mullion, United Kingdom is a cool 8°C (47°F), with a minimum of 2°C (36°F) and a maximum of 15°C (58°F). Expect 73 mm (2.9 in) of precipitation over 12 days, accompanied by an average humidity of 81%. Ideal for cozy indoor activities or enjoying nature’s beauty with the right gear!

January Temperature in Mullion

In January in Mullion, the average temperature is 8°C (47°F), with maximums reaching 15°C (58°F) and minimums dropping as low as 2°C (36°F). It's a great time to enjoy a mix of cool and mild weather, perfect for exploring the area's attractions.

January Weather in Mullion: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mullion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mullion, January typically has an average temperature of 8°C (47°F), with highs reaching up to 15°C (58°F) and lows dropping to around 2°C (36°F).

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

January Precipitation in Mullion

In Mullion in January, the precipitation amount is 73 mm (2.9 in) occurring over a span of 12 days.

January Precipitation Trends in Mullion

The chart displays monthly precipitation patterns in Mullion, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Mullion, January typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Mullion

In Mullion in January humidity is 81%. With an average temperature of 8°C (47°F), this humidity feels like a palpable heaviness in the air, making outdoor exploration feel damp and chilly, requiring travelers to bundle up and prepare for a brisk experience.

January Average Humidity in Mullion

This chart illustrates the average monthly humidity levels in Mullion, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Mullion is approximately 81%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Mullion

In Mullion in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Mullion, you can visit Hourly UV Index in Mullion.

Maximum UV Index Levels in Mullion for January

The chart shows the monthly maximum UV Index (UVI) for Mullion in January, 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 January, the maximum UV index in Mullion typically reaches 2, which falls under the low exposure category.

Data source: Mullion January 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 January Weather in Mullion Compares to Other Months

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

This table compares monthly weather conditions in Mullion, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	73 mm (2.9 inches)	81%	low
February Weather	9°C (48°F)	90 mm (3.5 inches)	83%	moderate
March Weather	9°C (48°F)	85 mm (3.4 inches)	82%	moderate
April Weather	10°C (50°F)	45 mm (1.8 inches)	83%	high
May Weather	12°C (54°F)	64 mm (2.5 inches)	85%	high
June Weather	15°C (59°F)	74 mm (2.9 inches)	85%	very high
July Weather	17°C (63°F)	70 mm (2.8 inches)	85%	very high
August Weather	17°C (62°F)	57 mm (2.3 inches)	85%	very high
September Weather	16°C (60°F)	64 mm (2.5 inches)	84%	high
October Weather	13°C (56°F)	120 mm (4.7 inches)	84%	moderate
November Weather	11°C (52°F)	102 mm (4.0 inches)	82%	low
December Weather	10°C (50°F)	123 mm (4.8 inches)	81%	low