The volunteers launched after a member of the public raised the alarm, having spotted someone they thought to be in difficulty and waving their arm off Rougey Point in Bundoran.
Weather conditions at the time were blowing a light south-easterly wind and there was a three-metre swell.
Once on scene, the lifeboat crew observed that the surfer, while not in difficulty or in any immediate danger, was in a challenging part of the sea and some distance away from the shore.
The crew made the decision to take the teenager onboard and transport him safely back to Bundoran Lifeboat Station.
Speaking following the callout, O’Kelly said: “We would like to commend the member of the public who raised the alarm this afternoon — that is always the right thing to do if you see someone you think or know to be in difficulty.
“While this surfer was not in any immediate danger, he was some distance from shore so we made a call to assist him safely back to shore.”
The kitesurfer, who had come ashore at Kilkee, was said to be suffering the effects of cold after spending as much as two-and-a-half hours at sea and was taken to hospital.