Jason- I'm headed to Ireland and Old Head next week. What were your impressions, and how many layers of clothing will I need, being a fair weather guy from SoCal?
Wayne - have a great trip! When the forecast says "fresh breeze" I learned that means pretty frickin windy.
I would recommend Under Armour, a turtleneck, a thin but warm sweater and a rainsuit. No need for an umbrella - it will be useless in the wind. I would also bring shorts because you can get literally any kind of weather.
Buy enough golf balls for the trip before you leave. They are really expensive there and you will definitely lose a few.
Old Head might be the most spactacular oceanside location I have ever seen (Pebble Beach would be the other contender). With ocean basically surrounding the course, high cliffs and countless birds below, it is an amazing spot.
I was not a big fan of the course. I did not think the oceanside holes used the cliffs to the best possible advantage and I thought the interior holes were pretty bland. I recommend that you enjoy the setting and not worry about the architecture. Hopefully you will get a sunny day.