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May Weather in Callan, Ireland

Last updated: August 23, 2025

In Callan, Ireland, the average temperature in May hovers around 11°C (52°F). Visitors can expect a range, with minimums dipping to -2°C (29°F) and maximums climbing to 24°C (75°F). The month also sees around 67 mm (2.6 in) of precipitation spread over 10 days, contributing to an average humidity of 83%.

May Temperature in Callan

In May in Callan, the average temperature is 11°C (52°F). Maximum temperatures can reach 24°C (75°F) and minimums can drop as low as -2°C (29°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

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

The chart illustrates May temperature patterns in Callan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Callan, May typically has an average temperature of 11°C (52°F), with highs reaching up to 24°C (75°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475257615956504543
Data source: Temperature data for Callan 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 Callan

In Callan in May, the total precipitation amount is 67 mm (2.6 in) over a period of 10 days.

May Precipitation Trends in Callan

The chart displays monthly precipitation patterns in Callan, 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 Callan, May typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4994826367646393608687104
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Callan

In Callan in May humidity is 83%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, often leading travelers to seek shelter indoors or to dress in layered clothing to stay warm while exploring the area.

May Average Humidity in Callan

This chart illustrates the average monthly humidity levels in Callan, 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 Callan 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 Callan

In Callan 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 Callan.

Maximum UV Index Levels in Callan for May

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

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

This table compares monthly weather conditions in Callan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)49 mm (1.9 inches)88%low
February Weather6°C (43°F)94 mm (3.7 inches)88%low
March Weather6°C (44°F)82 mm (3.2 inches)87%moderate
April Weather8°C (47°F)63 mm (2.5 inches)86%moderate
May Weather11°C (52°F)67 mm (2.6 inches)83%high
June Weather14°C (58°F)64 mm (2.5 inches)83%very high
July Weather16°C (61°F)63 mm (2.5 inches)85%very high
August Weather15°C (59°F)93 mm (3.7 inches)85%high
September Weather13°C (56°F)60 mm (2.4 inches)88%moderate
October Weather10°C (51°F)86 mm (3.4 inches)91%moderate
November Weather7°C (46°F)87 mm (3.4 inches)92%low
December Weather6°C (44°F)104 mm (4.1 inches)89%low

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