It is best to have locations scouted ahead of time and then wait for the right conditions and light.
The sky-to-subject contrast is extremely high in the Irish landscape, consequently, it is best to bracket your exposure or use GND filters.
Many Irish landscape photographers also use focus stacking, for these reasons a tripod is a good idea.
Many Irish landscape photographers use polarizing filters to clarify atmospheric conditions.
Usually, the best Irish landscape photos are captured with a wide-angle or telephoto lens, however, there is also ample subject matter for the macro photographer, especially at the seaside and coast.
Have a plan for you and your gear if you get caught in the rain.