About Tallaght, Leinster

With a population of around 80,300, Tallaght sits in Leinster, Ireland. The city operates in the GMT/IST time zone.

In 2025, Tallaght averaged an annual temperature of 51°F, with hottest temperatures reaching 86°F in July and lowest around 26°F in January. The city received approximately 46 inches of precipitation during the year.