With a population of around 18,100, Greystones sits in Leinster, Ireland. The city operates in the GMT/IST time zone.
In 2025, Greystones recorded an average annual temperature of 52°F. The hottest temperatures reached 78°F in July; the coolest were 29°F in January. Total precipitation for the year was 52 inches, with the wettest month being November. Snowfall for the year totaled approximately 3 inches.
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