With his crozier nestled in the crook of his arm, St Patrick arrived in Dublin to launch this weekend's festivities in the capital yesterday.
The capital's parade will kick off at 12pm with Olympic medallist and Dublin sailor Annalise Murphy taking on the honour of Grand Marshal.
For those looking for something a bit different, the world's largest outdoor Ceili will take place at Earlsfort Terrace, Dublin, from 4.30pm tomorrow.
The cream of Irish comedy talent, including Al Porter, will take to the stage at the 3Arena for Paddy's Night in support of Comic Relief.
In Cork, a Pop Up St Patrick's Day Festival Market will be held on Emmet Place on Saturday and Sunday.
Those nursing a hangover can enjoy lots of local produce as they mooch around the stalls.
Music lovers can also enjoy the Lee Sessions Trad Trails.
In Galway, a free concert will take place in Eyre Square after the parade.