Gogerty was formerly editor of The Sunday Times' monthly homes magazine, Insideout.
Coast's former editor Susy Smith has been promoted to editor in chief of the magazine with Gogerty reporting to her.
The magazine will also go monthly from February and Gogerty will hire a number of new editorial staff to produce the magazine.
Gogerty said: "I am thrilled and privileged to be appointed as editor of such a unique and beautiful magazine as Coast. It is a magazine whose time has come and I very much look forward to working with Susy Smith to develop it as it makes the move to ten issues per year."
Coast is a lifestyle magazine targeted at those who live by the sea and those who aspire to live by the sea.