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May Weather in Erin, United States

Last updated: June 24, 2025

In May, the average temperature in Erin, United States is a pleasant 21°C (70°F). However, be prepared for a range, as temperatures can dip to a chilly 5°C (41°F) or soar to a steamy 33°C (92°F). Expect 128 mm (5.1 in) of precipitation over approximately 13 days, contributing to an average humidity level of 82%. Keep these factors in mind as you plan your visit!

May Temperature in Erin

In May in Erin, the average temperature is 21°C (70°F). The maximum can reach 33°C (92°F), while the minimum can dip as low as 5°C (41°F). This climate makes Erin an ideal destination for travelers looking to enjoy pleasant weather with a good range of temperatures.

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

The chart illustrates May temperature patterns in Erin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Erin, May typically has an average temperature of 21°C (70°F), with highs reaching up to 33°C (92°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec404452597077817874634945
Data source: Temperature data for Erin 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 Erin

In Erin in May, the precipitation amount is 128 mm (5.1 in) recorded over the course of 13 days.

May Precipitation Trends in Erin

The chart displays monthly precipitation patterns in Erin, 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 Erin, May typically receives around 128 mm (5.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec10417616016212810911611711212892132
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Erin

In Erin in May, humidity is 82%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace that can quickly lead to discomfort for travelers, making outdoor activities less enjoyable and requiring frequent breaks for hydration.

May Average Humidity in Erin

This chart illustrates the average monthly humidity levels in Erin, 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 Erin is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Erin

In Erin 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 Erin.

Maximum UV Index Levels in Erin for May

The chart shows the monthly maximum UV Index (UVI) for Erin 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 Erin typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Erin 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 Erin Compares to Other Months

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

This table compares monthly weather conditions in Erin, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)104 mm (4.1 inches)86%moderate
February Weather7°C (44°F)175 mm (6.9 inches)84%high
March Weather11°C (53°F)160 mm (6.3 inches)84%high
April Weather15°C (59°F)162 mm (6.4 inches)80%very high
May Weather21°C (70°F)128 mm (5.1 inches)82%very high
June Weather25°C (77°F)109 mm (4.3 inches)83%extreme
July Weather27°C (81°F)115 mm (4.5 inches)79%extreme
August Weather26°C (78°F)117 mm (4.6 inches)76%very high
September Weather23°C (74°F)112 mm (4.4 inches)75%very high
October Weather17°C (63°F)128 mm (5.0 inches)74%high
November Weather9°C (49°F)92 mm (3.6 inches)85%moderate
December Weather7°C (46°F)132 mm (5.2 inches)88%moderate

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