January Weather in Wales, United States

Last updated: June 24, 2025

In January, the average temperature in Wales, United States hovers around -6°C (22°F), with a chilly minimum dipping as low as -32°C (-25°F) and occasionally reaching a pleasant maximum of 13°C (56°F). Expect about 56 mm (2.2 in) of precipitation spread over 7 days, while the air remains notably humid with an average of 85%. Stay warm and prepared!

January Temperature in Wales

In January in Wales, the average temperature is -6°C (22°F). Maximums can reach 13°C (56°F), while minimums can drop as low as -32°C (-25°F). Be sure to dress warmly and prepare for a wide range of temperatures if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Wales, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wales, January typically has an average temperature of -6°C (22°F), with highs reaching up to 13°C (56°F) and lows dropping to around -32°C (-25°F).

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

January Precipitation in Wales

In Wales in January, the total precipitation amount is 56 mm (2.2 in) over a period of 7 days.

January Precipitation Trends in Wales

The chart displays monthly precipitation patterns in Wales, 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 Wales, January typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 7 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 Wales

In Wales in January humidity is 85%. With an average temperature of -6°C (22°F), this humidity feels like an icy mist clinging to your skin, making outdoor activities uncomfortably chilly and causing your breath to cloud in the cold air, leaving you yearning for warmth and cozy indoor retreats while traveling.

January Average Humidity in Wales

This chart illustrates the average monthly humidity levels in Wales, 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 Wales is approximately 85%, 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 Wales

In Wales in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Wales, you can check the information here.

Maximum UV Index Levels in Wales for January

The chart shows the monthly maximum UV Index (UVI) for Wales 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 Wales typically reaches 3, which falls under the moderate exposure category.

Data source: Wales 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 Wales Compares to Other Months

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

This table compares monthly weather conditions in Wales, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	56 mm (2.2 inches)	85%	moderate
February Weather	-5°C (24°F)	51 mm (2.0 inches)	85%	moderate
March Weather	2°C (36°F)	60 mm (2.4 inches)	85%	moderate
April Weather	8°C (46°F)	108 mm (4.3 inches)	85%	very high
May Weather	15°C (59°F)	129 mm (5.1 inches)	78%	very high
June Weather	21°C (70°F)	111 mm (4.4 inches)	80%	very high
July Weather	24°C (75°F)	99 mm (3.9 inches)	78%	very high
August Weather	22°C (72°F)	86 mm (3.4 inches)	76%	very high
September Weather	18°C (66°F)	97 mm (3.8 inches)	79%	high
October Weather	11°C (52°F)	113 mm (4.5 inches)	83%	moderate
November Weather	3°C (37°F)	46 mm (1.8 inches)	88%	moderate
December Weather	-1°C (30°F)	46 mm (1.8 inches)	81%	low