A big part of surfing anywhere but especially in Ireland is predicting when and where you are going to get the best waves. Many surfers will know their local beaches and what makes them go off for example my local beach can get really good surf with a few days off onshore followed by a day off shore. It just creates beautiful lines and makes a really good surf. Of course not every beach is the same and many surfers coming to Ireland will need to check out a surf forecast.
My favorite one is magicseaweed.com as it gives loads of detailed information such a swell height, wind direction, water temperature (usually cold) and even gives a star rating for each beach as we all know big surf is not necessarily good surf. It also allows you to upload pictures and videos and tag them for the beach that you were at or closest too which is a pretty cool feature. We also have a gallery on this site for you to upload pics and tag what beaches they are from.
For surfers who want to learn about the surf in Ireland magicseaweed has a great write up on what generally makes the surf in Ireland go off here. So for travel ling surfers this is what I recommend as it gives the most information and is generally quite accurate. Another quick tip I have for people traveling is that I often bring my android tv box with me as when staying in b&bs and other accommodation, it can get a bit boring so this allow me to watch movies and TV in between my surfs!