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May Weather in Grenagh, Ireland

Last updated: August 23, 2025

In Grenagh, Ireland, the average temperature in May is a mild 11°C (52°F), where daytime highs can reach up to 23°C (74°F) and nighttime lows may drop to 0°C (31°F). With an average precipitation of 74 mm (2.9 in) spread over 12 days, visitors can expect occasional showers. Additionally, the average humidity hovers around 84%, adding a touch of moisture to the air.

May Temperature in Grenagh

In May in Grenagh, the average temperature is 11°C (52°F). Maximums can reach 23°C (74°F), and minimums can drop as low as 0°C (31°F). This variation in temperature makes it essential to pack layers for your travels, ensuring comfort whether you're exploring during the day or enjoying the cooler evenings.

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

The chart illustrates May temperature patterns in Grenagh, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grenagh, May typically has an average temperature of 11°C (52°F), with highs reaching up to 23°C (74°F) and lows dropping to around 0°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec434444485257615956514645
Data source: Temperature data for Grenagh 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 Grenagh

In Grenagh in May, the precipitation amount is 74 mm (2.9 in) over a span of 12 days.

May Precipitation Trends in Grenagh

The chart displays monthly precipitation patterns in Grenagh, 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 Grenagh, May typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec56101837274606389699580103
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Grenagh

In Grenagh in May, humidity is 84%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket, making it uncomfortable for traveling as the dampness clings to your skin and can leave you feeling sluggish and fatigued.

May Average Humidity in Grenagh

This chart illustrates the average monthly humidity levels in Grenagh, 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 Grenagh is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%85%84%84%84%85%85%84%85%86%84%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Grenagh

In Grenagh 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 Grenagh.

Maximum UV Index Levels in Grenagh for May

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

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

This table compares monthly weather conditions in Grenagh, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)55 mm (2.2 inches)83%low
February Weather7°C (44°F)101 mm (4.0 inches)85%low
March Weather7°C (44°F)83 mm (3.3 inches)84%moderate
April Weather9°C (48°F)72 mm (2.8 inches)84%moderate
May Weather11°C (52°F)74 mm (2.9 inches)84%high
June Weather14°C (57°F)60 mm (2.4 inches)85%very high
July Weather16°C (61°F)63 mm (2.5 inches)85%very high
August Weather15°C (60°F)89 mm (3.5 inches)84%high
September Weather13°C (57°F)69 mm (2.7 inches)85%moderate
October Weather11°C (52°F)95 mm (3.7 inches)86%moderate
November Weather8°C (47°F)79 mm (3.1 inches)84%low
December Weather7°C (45°F)103 mm (4.1 inches)83%low

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