A lifeboat station was established in Trearddur in 1967 as an inshore lifeboat station, and a D-class (RFD PB16) lifeboat was placed on station, with her first rescue taking place on 4 June, and a new boathouse was constructed in 1971.
A new and larger boathouse was built in 1993, which provided changing room facilities, crew room and galley, a workshop, fuel store and storeroom and a souvenir outlet, which allowed a new Atlantic 21-class lifeboat to be placed on station on 5 December 1996, with the D-class being withdrawn.
On 24 May 2001, the station's Honorary Secretary Mr Jack Abbott MBE was awarded the Royal Humane Society Testimonial Vellum and a Resuscitation Certificate for his rescue of a man who got into difficulties trying to return to the shore after swimming after his dinghy which had drifted away from the slipway. Abbott spotted the man face down, 50m from shore and swam out to him, towed him back to shore and performed CPR.[2]
The same year, a decision was made by the RNLI to reallocate a D-class lifeboat to Trearddur Bay to operate alongside the B-class lifeboat already on station.
In 2022, Helmsman Lee Duncan became the first crew member of a B-class lifeboat to be awarded the RNLI Silver Medal for the rescue of a surfer in extreme weather conditions. The three other crew members, Dafydd Griffiths, Leigh McCann and Michael Doran, were each awarded the RNLI bronze medal.[4]