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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 18°C (64°F). However, be prepared for a range, as temperatures can dip to a chilly -1°C (30°F) or soar to a warm 32°C (91°F). This month also sees 136 mm (5.4 in) of precipitation over approximately 14 days, with an average humidity level of 79%.

May Temperature in Dublin

In May in Dublin, the average temperature is 18°C (64°F). The maximum can reach 32°C (91°F), while the minimum can drop as low as -1°C (30°F). Be prepared for a range of weather conditions when traveling during this time.

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 18°C (64°F), with highs reaching up to 32°C (91°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec303442526472767369574136
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, the precipitation amount is 136 mm (5.4 in) over a span of 14 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 136 mm (5.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7910013310413611811588901009790
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 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
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 Weather-1°C (30°F)79 mm (3.1 inches)87%moderate
February Weather1°C (34°F)100 mm (3.9 inches)85%moderate
March Weather6°C (43°F)132 mm (5.2 inches)86%high
April Weather11°C (52°F)104 mm (4.1 inches)84%very high
May Weather18°C (64°F)136 mm (5.4 inches)79%very high
June Weather22°C (73°F)118 mm (4.6 inches)82%extreme
July Weather24°C (76°F)115 mm (4.5 inches)79%very high
August Weather23°C (73°F)88 mm (3.5 inches)70%very high
September Weather21°C (69°F)90 mm (3.5 inches)69%very high
October Weather14°C (58°F)100 mm (3.9 inches)76%high
November Weather5°C (42°F)97 mm (3.8 inches)88%moderate
December Weather2°C (36°F)90 mm (3.5 inches)87%moderate

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