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May Weather in North Wales, United States

Last updated: June 24, 2025

In May, the average temperature in North Wales, United States hovers around 17°C (63°F), offering a pleasant climate for exploration. However, be prepared for a temperature range that can dip to a minimum of 1°C (34°F) and soar to a maximum of 34°C (94°F). Expect around 144 mm (5.7 in) of precipitation over about 15 days, contributing to an average humidity level of 75%—perfect for a lush, vibrant atmosphere!

May Temperature in North Wales

In May in North Wales, the average temperature is 17°C (63°F). Maximums can reach 34°C (94°F), and minimums can be as low as 1°C (34°F). It's a good idea to pack layers to stay comfortable during your travels.

May Weather in North Wales: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in North Wales, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In North Wales, May typically has an average temperature of 17°C (63°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec343743536372787570604538
Data source: Temperature data for North Wales 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 North Wales

In North Wales in May, the precipitation amount is 144 mm (5.7 in) during a span of 15 days.

May Precipitation Trends in North Wales

The chart displays monthly precipitation patterns in North Wales, 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 North Wales, May typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec671081081051441041481559610584102
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in North Wales

In North Wales in May, humidity is 75%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities a bit sticky and requiring frequent breaks to stay refreshed during your travels.

May Average Humidity in North Wales

This chart illustrates the average monthly humidity levels in North Wales, 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 North Wales is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in North Wales

In North Wales in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in North Wales.

Maximum UV Index Levels in North Wales for May

The chart shows the monthly maximum UV Index (UVI) for North Wales 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 North Wales typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: North Wales 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 North Wales Compares to Other Months

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

This table compares monthly weather conditions in North Wales, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)67 mm (2.6 inches)87%moderate
February Weather3°C (37°F)108 mm (4.3 inches)85%moderate
March Weather6°C (43°F)108 mm (4.3 inches)85%high
April Weather12°C (53°F)105 mm (4.1 inches)83%very high
May Weather17°C (63°F)144 mm (5.7 inches)75%very high
June Weather22°C (72°F)104 mm (4.1 inches)73%very high
July Weather25°C (78°F)148 mm (5.8 inches)65%very high
August Weather24°C (75°F)155 mm (6.1 inches)62%very high
September Weather21°C (70°F)96 mm (3.8 inches)66%very high
October Weather15°C (60°F)105 mm (4.2 inches)79%high
November Weather7°C (45°F)84 mm (3.3 inches)87%moderate
December Weather3°C (38°F)102 mm (4.0 inches)85%low

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