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January Weather in Llanellen, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Llanellen, United Kingdom hovers around 5°C (41°F), with a minimum dipping to -5°C (24°F) and a maximum reaching 13°C (56°F). Expect a precipitation total of 61 mm (2.4 in) spread over 11 days, and feel the average humidity at a high 88%. Perfect for cozying up indoors while enjoying the unique charm of the season!

January Temperature in Llanellen

In January in Llanellen, the average temperature is 5°C (41°F). Maximums can reach 13°C (56°F), while minimums can drop as low as -5°C (24°F). Be prepared for chilly weather and pack accordingly when traveling during this time.

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

The chart illustrates January temperature patterns in Llanellen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Llanellen, January typically has an average temperature of 5°C (41°F), with highs reaching up to 13°C (56°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec414244485359636157524643
Data source: Temperature data for Llanellen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Llanellen

In Llanellen in January, the total precipitation amount is 61 mm (2.4 in) over the course of 11 days.

January Precipitation Trends in Llanellen

The chart displays monthly precipitation patterns in Llanellen, 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 Llanellen, January typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec61848858798273846311184108
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Llanellen

In Llanellen in January humidity is 88%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making it essential to bundle up for your travels, as every breath feels heavy in the air and the landscape appears cloaked in a misty shroud.

January Average Humidity in Llanellen

This chart illustrates the average monthly humidity levels in Llanellen, 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 Llanellen is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Llanellen

In Llanellen 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 Llanellen.

Maximum UV Index Levels in Llanellen for January

The chart shows the monthly maximum UV Index (UVI) for Llanellen 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 Llanellen typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Llanellen 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 Llanellen Compares to Other Months

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

This table compares monthly weather conditions in Llanellen, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)61 mm (2.4 inches)88%low
February Weather6°C (42°F)84 mm (3.3 inches)88%low
March Weather7°C (44°F)88 mm (3.5 inches)86%moderate
April Weather9°C (48°F)58 mm (2.3 inches)84%high
May Weather12°C (53°F)79 mm (3.1 inches)80%high
June Weather15°C (60°F)82 mm (3.2 inches)80%very high
July Weather17°C (63°F)73 mm (2.9 inches)70%very high
August Weather16°C (61°F)84 mm (3.3 inches)73%high
September Weather14°C (57°F)63 mm (2.5 inches)79%high
October Weather11°C (52°F)111 mm (4.4 inches)89%moderate
November Weather8°C (46°F)84 mm (3.3 inches)90%low
December Weather6°C (43°F)108 mm (4.3 inches)89%low

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