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May Weather in Portlaw, Ireland

Last updated: August 23, 2025

In May, the average temperature in Portlaw, Ireland hovers around 11°C (53°F). Expect chilly minimums of 1°C (33°F) and cozy maximums reaching 21°C (70°F). Don't forget your umbrella, as you'll encounter approximately 63 mm (2.5 in) of precipitation spread over 10 days. With an average humidity of 83%, be prepared for a damp and chilly atmosphere!

May Temperature in Portlaw

In May in Portlaw, the average temperature is 11°C (53°F), with maximums reaching 21°C (70°F) and minimums dropping as low as 1°C (33°F). Be prepared for a range of temperatures and pack accordingly for your trip!

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

The chart illustrates May temperature patterns in Portlaw, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portlaw, May typically has an average temperature of 11°C (53°F), with highs reaching up to 21°C (70°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec444445485257616057524745
Data source: Temperature data for Portlaw 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 Portlaw

In Portlaw in May, the precipitation amount is 63 mm (2.5 in) over a span of 10 days.

May Precipitation Trends in Portlaw

The chart displays monthly precipitation patterns in Portlaw, 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 Portlaw, May typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5610587696368639468103112118
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Portlaw

In Portlaw in May, humidity is 83%. With an average temperature of 11°C (53°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and causing an inevitable sheen of sweat to form, which can dampen the joy of exploring your surroundings.

May Average Humidity in Portlaw

This chart illustrates the average monthly humidity levels in Portlaw, 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 Portlaw is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%85%83%85%86%85%86%87%87%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Portlaw

In Portlaw 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 Portlaw.

Maximum UV Index Levels in Portlaw for May

The chart shows the monthly maximum UV Index (UVI) for Portlaw 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 Portlaw typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Portlaw 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 Portlaw Compares to Other Months

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

This table compares monthly weather conditions in Portlaw, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)56 mm (2.2 inches)85%low
February Weather7°C (45°F)105 mm (4.1 inches)86%low
March Weather7°C (45°F)86 mm (3.4 inches)86%moderate
April Weather9°C (48°F)69 mm (2.7 inches)85%moderate
May Weather11°C (53°F)63 mm (2.5 inches)83%high
June Weather14°C (58°F)68 mm (2.7 inches)85%very high
July Weather16°C (61°F)62 mm (2.5 inches)86%very high
August Weather15°C (60°F)94 mm (3.7 inches)85%high
September Weather14°C (57°F)68 mm (2.7 inches)86%moderate
October Weather11°C (52°F)103 mm (4.1 inches)87%moderate
November Weather9°C (48°F)112 mm (4.4 inches)86%low
December Weather7°C (46°F)118 mm (4.6 inches)84%low

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