January Weather in Mostyn, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Mostyn, United Kingdom hovers around 5°C (42°F), with extremes ranging from a chilly -3°C (27°F) to a mild 14°C (57°F). Expect about 65 mm (2.6 in) of precipitation over 11 days, coupled with a high average humidity of 89%. Ideal for those who enjoy crisp air and cozy atmospheres!

January Temperature in Mostyn

In January in Mostyn, the average temperature is 5°C (42°F), with maximums reaching up to 14°C (57°F) and minimums dropping as low as -3°C (27°F). Be sure to pack layered clothing to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in Mostyn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mostyn, January typically has an average temperature of 5°C (42°F), with highs reaching up to 14°C (57°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Mostyn

In Mostyn in January, the precipitation amount is 65 mm (2.6 in) over a span of 11 days.

January Precipitation Trends in Mostyn

The chart displays monthly precipitation patterns in Mostyn, 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 Mostyn, January typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Mostyn

In Mostyn in January humidity is 89%. With an average temperature of 5°C (42°F), this humidity feels like a chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while exploring.

January Average Humidity in Mostyn

This chart illustrates the average monthly humidity levels in Mostyn, 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 Mostyn is approximately 89%, 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 Mostyn

In Mostyn in January, 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 Mostyn.

Maximum UV Index Levels in Mostyn for January

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

Data source: Mostyn 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 Mostyn Compares to Other Months

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

This table compares monthly weather conditions in Mostyn, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	65 mm (2.6 inches)	89%	low
February Weather	6°C (43°F)	77 mm (3.0 inches)	88%	low
March Weather	7°C (45°F)	84 mm (3.3 inches)	86%	moderate
April Weather	9°C (48°F)	53 mm (2.1 inches)	84%	moderate
May Weather	12°C (54°F)	68 mm (2.7 inches)	79%	high
June Weather	15°C (60°F)	94 mm (3.7 inches)	81%	very high
July Weather	17°C (62°F)	96 mm (3.8 inches)	78%	very high
August Weather	16°C (61°F)	98 mm (3.9 inches)	79%	high
September Weather	14°C (57°F)	94 mm (3.7 inches)	85%	moderate
October Weather	11°C (52°F)	94 mm (3.7 inches)	90%	moderate
November Weather	8°C (47°F)	78 mm (3.1 inches)	91%	low
December Weather	6°C (44°F)	100 mm (4.0 inches)	89%	low