Hello Margherita,
How nice that you are planning to explore Ireland
by motorhome! Are you planning to drive the entire coastal route ?
Usually, it is best to stay at campsites while traveling along the Wild Atlantic Way. The rule of thumb is that overnight parking is only permitted with the landowner's permission or in dedicated spaces, when not forbidden by signs.
There are many campsites listed on the
Camping Ireland website and you can see their opening dates by clicking on every listing. Most of them have facilities for RV and camper vans (water/waste disposal, electricity, etc). For more convenience, you can filter by camping type (Campervan/Motorhome).
Furthermore, there are other overnight parking options such as
Safe Nights Ireland. The
Total Camping Ireland website lists more of these overnight parking options (sometimes free, sometimes for a small fee).
Let us know how your plans are coming along. 😊
Cheers,
Antoine