The west coast of Ireland, you can kite the whole coast. Cooler air, punchier wind. 20 knots is sweet, for a 9 - 12m kite.
Achill Island, Co. Mayo is a good spot.
In Ireland there's empty beaches everywhere, kite anywhere, 3 Kitesurfers is considered a crowd. Check out Keel, Cross in Belmullet, Dogs Bay Galway, just about any beach in Donegal. Dublin has a big crew on Dollymount (Dollyfoina).
You'll need a 4mm wettie. No booties, gloves or hood require coz it's summer.
Pubs and pints everywhere, that's where the craic is. If you do venture to Ireland, you'll be given a good steer and introduced to local groups from here -
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