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May Weather in Llanellen, United Kingdom

Last updated: August 27, 2025

In May, the average temperature in Llanellen, United Kingdom hovers around 12°C (53°F), with a minimum drop to 0°C (32°F) and a pleasant maximum reaching up to 26°C (78°F). Expect 79 mm (3.1 in) of precipitation spread over 13 days, contributing to an average humidity of 80%. Enjoy the balance of cool and warm days as you experience the charm of Llanellen this season!

May Temperature in Llanellen

In May in Llanellen, the average temperature is 12°C (53°F). Maximums can reach 26°C (78°F), and minimums can be as low as 0°C (32°F). This variability in temperature makes it essential for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates May 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, May typically has an average temperature of 12°C (53°F), with highs reaching up to 26°C (78°F) and lows dropping to around 0°C (32°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.

May Precipitation in Llanellen

In Llanellen in May, the precipitation amount is 79 mm (3.1 in) over a span of 13 days.

May Precipitation Trends in Llanellen

The chart displays monthly precipitation patterns in Llanellen, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Llanellen, May typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec61848858798273846311184108
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Llanellen

In Llanellen in May humidity is 80%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill clinging to your skin, making outdoor activities less inviting and prompting the need for layered clothing to stay comfortable while traveling.

May Average Humidity in Llanellen

This chart illustrates the average monthly humidity levels in Llanellen, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Llanellen is approximately 80%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Llanellen

In Llanellen in May, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Llanellen.

Maximum UV Index Levels in Llanellen for May

The chart shows the monthly maximum UV Index (UVI) for Llanellen in May, 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 May, the maximum UV index in Llanellen typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Llanellen May 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 May 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 May’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 May’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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