May Weather in Killarney, Canada

Last updated: June 18, 2025

In Killarney, Canada, the average temperature in May hovers around 11°C (52°F). Visitors can experience a range of temperatures, with a minimum of -7°C (20°F) and a maximum of 31°C (87°F). Expect about 40 mm (1.6 in) of precipitation spread over 7 days, coupled with an average humidity of 74%. Prepare for varied weather to make the most of your time!

May Temperature in Killarney

In May in Killarney, the average temperature is 11°C (52°F), with maximums reaching 31°C (87°F) and minimums dropping as low as -7°C (20°F). This diverse range of temperatures makes Killarney an intriguing destination for travelers seeking both warm and cool experiences.

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

The chart illustrates May temperature patterns in Killarney, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Killarney, May typically has an average temperature of 11°C (52°F), with highs reaching up to 31°C (87°F) and lows dropping to around -7°C (20°F).

Data source: Temperature data for Killarney generated using information from the Copernicus Climate Change Service.

May Precipitation in Killarney

In Killarney in May, the precipitation amount is 40 mm (1.6 in) over a span of 7 days.

May Precipitation Trends in Killarney

The chart displays monthly precipitation patterns in Killarney, 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 Killarney, May typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 7 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Killarney

In Killarney in May, humidity is 74%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill in the air, making travel outdoors feel heavier and more cumbersome, often leading to discomfort and a need for warmer clothing.

May Average Humidity in Killarney

This chart illustrates the average monthly humidity levels in Killarney, 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 Killarney is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Killarney

In Killarney in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Killarney.

Maximum UV Index Levels in Killarney for May

The chart shows the monthly maximum UV Index (UVI) for Killarney 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 Killarney typically reaches 8, which falls under the very high exposure category.

Data source: Killarney 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 Killarney Compares to Other Months

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

This table compares monthly weather conditions in Killarney, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-13°C (8°F)	15 mm (0.6 inches)	92%	low
February Weather	-15°C (5°F)	15 mm (0.6 inches)	90%	moderate
March Weather	-5°C (23°F)	27 mm (1.1 inches)	88%	moderate
April Weather	2°C (35°F)	26 mm (1.0 inches)	81%	very high
May Weather	11°C (52°F)	40 mm (1.6 inches)	74%	very high
June Weather	18°C (64°F)	87 mm (3.4 inches)	72%	very high
July Weather	20°C (68°F)	63 mm (2.5 inches)	74%	very high
August Weather	18°C (65°F)	70 mm (2.8 inches)	76%	very high
September Weather	13°C (56°F)	74 mm (2.9 inches)	73%	high
October Weather	4°C (40°F)	48 mm (1.9 inches)	76%	moderate
November Weather	-5°C (24°F)	29 mm (1.1 inches)	86%	low
December Weather	-10°C (15°F)	23 mm (0.9 inches)	91%	low