The all-weather lifeboat was called out at 11am on Sunday 18 March and proceeded to Gola Island to assist the casualty.
The casualty was subsequently transferred to the lifeboat, where he was treated for mild hypothermia.
The lifeboat stayed at the scene until the tide turned before the volunteer crew then secured a tow rope to the boat and transferred both the fisherman, who was fully recovered, and the boat to Bunbeg Harbour.
Speaking following the callout, Arranmore RNLI coxswain Jimmy Early said: “Although it was quite windy, the sea was calm but the wind chill factor was approximately 1-2 degrees centigrade which accounted for the hypothermia.
“Once we treated the fisherman, he made a full recovery and was thankful to all the rescue services for their help.”