New figures from the Australian Bureau of Statistics have found an increase in the number of tourist accommodation rooms that are filled in Western Australia's south during winter.

The bureau figures revealed a jump in the room occupancy rate figures for the June quarter for the Australia's South West tourism region, which includes the south-west, south coast and Great Southern.

In the three months to the end of June this year, 48.6 per cent of rooms in the region were occupied, up from the rate of 46.5 in the same quarter in 2012.

That was despite Bunbury, Busselton and Albany all experiencing a drop in their room occupancy rates.

Margaret River and Denmark were among the biggest improvers, both jumping by about 11 per cent to 62 and 58 per cent respectively.