Arthur Roy Taylor, from Lancashire, went missing from his boat in Gwbert on Saturday, 15 April.
A man's body was discovered near Ynys Locthyn, Llangrannog, on Sunday at about 14:45 BST.
Dyfed-Powys Police said formal identification of the body has not taken place.
Mr Taylor left his accommodation to take his boat out from Gwbert boat club in Ceredigion. It was found the next day.
Mr Taylor lived in the Cardigan area before moving to Lancashire, but was a frequent visitor because of his association with the Teifi Boating Club.
The family of a missing 90-year-old sailor has been informed after a body was found off the coast in Ceredigion.