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May Weather in Castlerea, Ireland

Last updated: August 23, 2025

In May, the average temperature in Castlerea, Ireland hovers around 11°C (53°F). Be prepared for a range of conditions, as temperatures can dip as low as -2°C (29°F) and soar to a warm 25°C (78°F). Expect some moisture, with 82 mm (3.2 in) of precipitation spread over approximately 13 days, and experience a high average humidity level of 83%.

May Temperature in Castlerea

In May, in Castlerea, the average temperature is 11°C (53°F). Maximum temperatures can reach 25°C (78°F), while minimums can drop as low as -2°C (29°F). It’s advisable for travelers to be prepared for a wide range of temperatures during this time.

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

The chart illustrates May temperature patterns in Castlerea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castlerea, May typically has an average temperature of 11°C (53°F), with highs reaching up to 25°C (78°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344485357605955504543
Data source: Temperature data for Castlerea 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 Castlerea

In Castlerea in May, the total precipitation amount is 82 mm (3.2 in), occurring over the course of 13 days.

May Precipitation Trends in Castlerea

The chart displays monthly precipitation patterns in Castlerea, 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 Castlerea, May typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec74122101628292841358411699106
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Castlerea

In Castlerea 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 Castlerea

This chart illustrates the average monthly humidity levels in Castlerea, 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 Castlerea is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%86%83%83%85%85%88%91%92%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Castlerea

In Castlerea 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 Castlerea.

Maximum UV Index Levels in Castlerea for May

The chart shows the monthly maximum UV Index (UVI) for Castlerea 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 Castlerea typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Castlerea 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 Castlerea Compares to Other Months

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

This table compares monthly weather conditions in Castlerea, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)74 mm (2.9 inches)88%low
February Weather6°C (43°F)122 mm (4.8 inches)88%low
March Weather7°C (44°F)101 mm (4.0 inches)87%moderate
April Weather9°C (48°F)62 mm (2.4 inches)86%moderate
May Weather11°C (53°F)82 mm (3.2 inches)83%high
June Weather14°C (57°F)92 mm (3.6 inches)83%very high
July Weather15°C (60°F)84 mm (3.3 inches)85%very high
August Weather15°C (59°F)135 mm (5.3 inches)85%high
September Weather13°C (56°F)83 mm (3.3 inches)88%moderate
October Weather10°C (51°F)116 mm (4.6 inches)91%moderate
November Weather7°C (46°F)99 mm (3.9 inches)92%low
December Weather6°C (44°F)106 mm (4.2 inches)89%low

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