The Castletownbere Directional light was first temporarily established on 24 March 1965. It was permanently established on 23 November 1965 in the position of the former upper unlighted rear lead daymark.
A new directional light was established in the position of the former front lead daymark on 10 March 1983.
The current PEL 6 type light was established in its present position on 17 November 2010.