It was established in 1972 in the former Melcombe Regis Boys' School at Westham Road and moved to Brewers Quay, on the south side of Hope Square near Weymouth Harbour, in 1990.
[3][4] Brewers Quay opened in June 1990 and Weymouth Museum initially operated alongside the Timewalk exhibition, which took visitors on a journey covering the town's history and maritime connections from the 14th century onwards.
[5] However, as Brewers Quay had been suffering operational losses since its opening, a succession of new owners of the building disrupted the museum's plans.
Brewers Quay reopened primarily as an antiques emporium in 2013, which saw temporary space provided for the museum, which re-opened in December that year.
The trust revealed its intentions to gain some of the estimated £300,000 project cost from the Heritage Lottery Fund, while the council pledged £94,000.