January Weather in Henllan, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Henllan, United Kingdom hovers around 5°C (42°F). Expect a cool climate where minimum temperatures can dip to -3°C (27°F), while the maximum may reach 14°C (58°F). Prepare for some damp days, as precipitation averages 66 mm (2.6 in) spread over 12 days, and the average humidity is quite high at 89%.

January Temperature in Henllan

In January in Henllan, the average temperature is 5°C (42°F). The maximum can reach 14°C (58°F) and the minimum can be as low as -3°C (27°F). It's advisable to pack layers to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in Henllan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Henllan, January typically has an average temperature of 5°C (42°F), with highs reaching up to 14°C (58°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Henllan

In Henllan in January, the precipitation amount is 66 mm (2.6 in) over the course of 12 days.

January Precipitation Trends in Henllan

The chart displays monthly precipitation patterns in Henllan, 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 Henllan, January typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 12 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 Henllan

In Henllan 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 Henllan

This chart illustrates the average monthly humidity levels in Henllan, 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 Henllan 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 Henllan

In Henllan 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 Henllan.

Maximum UV Index Levels in Henllan for January

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

Data source: Henllan 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 Henllan Compares to Other Months

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

This table compares monthly weather conditions in Henllan, 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)	66 mm (2.6 inches)	89%	low
February Weather	6°C (43°F)	83 mm (3.3 inches)	88%	low
March Weather	7°C (45°F)	88 mm (3.5 inches)	86%	moderate
April Weather	9°C (48°F)	54 mm (2.1 inches)	84%	moderate
May Weather	12°C (53°F)	67 mm (2.6 inches)	79%	high
June Weather	15°C (59°F)	98 mm (3.9 inches)	81%	very high
July Weather	16°C (62°F)	92 mm (3.6 inches)	78%	very high
August Weather	16°C (61°F)	91 mm (3.6 inches)	79%	high
September Weather	14°C (57°F)	93 mm (3.7 inches)	85%	moderate
October Weather	11°C (52°F)	97 mm (3.8 inches)	90%	moderate
November Weather	8°C (47°F)	82 mm (3.2 inches)	91%	low
December Weather	6°C (44°F)	106 mm (4.2 inches)	89%	low