The crew were called out on Saturday when the kayaker got into difficulty when his outrigger stabilisation equipment failed in the heavy swell behind Gorey Castle.
His companion had raised the alarm after making it to shore.
The crew began a shoreline search around Gorey while a Fire and Rescue Service crew took their inshore vessel to Anne Port as conditions were too rough to launch from the Welcome Slip at Gorey.
The firefighters then spotted the man with his upturned kayak and contacted the St Catherine crew.
The kayaker was brought on board the lifeboat before being assessed and, despite having been in the water for almost an hour, he was suffering no more than exposure to the elements.
The RNLI said the rescue happened in force seven winds and heavy swell, in conditions that were ‘at the operational limits of the inshore lifeboat’.
