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May Weather in Dublin, United States

Last updated: June 24, 2025

In May, the average temperature in Dublin, United States hovers around 17°C (63°F), making it a pleasant time of year. However, be prepared for temperature fluctuations, with a minimum plunging to -1°C (30°F) and a maximum soaring to 30°C (87°F). Additionally, expect around 102 mm (4.0 in) of precipitation spread over 13 days, contributing to an average humidity of 83%.

May Temperature in Dublin

In May, in Dublin, the average temperature is 17°C (63°F). Maximums can reach 30°C (87°F) and minimums can be as low as -1°C (30°F). This variability means you should pack layers and be prepared for both warm and cool conditions while traveling.

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

The chart illustrates May temperature patterns in Dublin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dublin, May typically has an average temperature of 17°C (63°F), with highs reaching up to 30°C (87°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec354145546369737267584440
Data source: Temperature data for Dublin 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 Dublin

In Dublin in May, precipitation amounts to 102 mm (4.0 in) over the course of 13 days.

May Precipitation Trends in Dublin

The chart displays monthly precipitation patterns in Dublin, 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 Dublin, May typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec661058410510285618695976287
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Dublin

In Dublin in May humidity is 83%. With an average temperature of 17°C (63°F), this humidity feels like a warm, sticky embrace that can make traveling uncomfortable, as the air clings to the skin and creates a heavy atmosphere, often leading to fatigue and a longing for the cooling relief of shade or air conditioning.

May Average Humidity in Dublin

This chart illustrates the average monthly humidity levels in Dublin, 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 Dublin is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Dublin

In Dublin in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Dublin.

Maximum UV Index Levels in Dublin for May

The chart shows the monthly maximum UV Index (UVI) for Dublin 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 Dublin typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010753
Data source: Dublin 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 Dublin Compares to Other Months

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

This table compares monthly weather conditions in Dublin, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)66 mm (2.6 inches)87%moderate
February Weather5°C (41°F)105 mm (4.1 inches)87%high
March Weather7°C (46°F)84 mm (3.3 inches)86%very high
April Weather12°C (54°F)105 mm (4.1 inches)84%very high
May Weather17°C (63°F)102 mm (4.0 inches)83%extreme
June Weather21°C (69°F)85 mm (3.3 inches)83%extreme
July Weather23°C (74°F)61 mm (2.4 inches)79%extreme
August Weather22°C (72°F)86 mm (3.4 inches)66%very high
September Weather20°C (67°F)95 mm (3.7 inches)68%very high
October Weather14°C (58°F)97 mm (3.8 inches)78%high
November Weather6°C (44°F)61 mm (2.4 inches)89%moderate
December Weather4°C (40°F)87 mm (3.4 inches)86%moderate

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