Originally Posted by KildareFan
Just to note that most rural churches are locked up after daily mass due to vandalism and burglaries. You could contact the parish priest in advance - most parishes have websites with contact details.
That is true. Most churches might actually only be open for an hour or so before and after mass. I don't really know since I'd only ever go to a church if there was a mass on. Opening hours would be different for churches in places like Knock though where it seems to be pretty much all day.
You can use this website to see mass times and get contact details: https://www.catholicireland.net/mass-times/
Very rural churches might just have one mass a week larger churches would generally have mass every day with two on a Friday and at least two on a Sunday. The only other thing is that if it's not a small church, you could visit during confessions but I think that they're mainly done on Saturdays some time in the middle of the day. It's not as easy to get times for those online. You'd need to get the parish leaflet I think for that information.