About Castletroy, Munster's Climate & Weather History

Castletroy is a city of approximately 14,700 people in Munster, Ireland. Located in the GMT/IST time zone at 52.7°N latitude.

In 2025, Castletroy recorded an average annual temperature of 51°F. The hottest temperatures reached 83°F in July; the coolest were 23°F in January. Total precipitation for the year was 60 inches, with the wettest month being November. Snowfall for the year totaled approximately 4 inches.