Both Coronet Peak and The Remarkables have received more than 30cm of natural snow in that time, and another wintry storm is forecast to arrive late next week.
Mr Anderson said the ski areas could now go into September with a "high degree of confidence".
Getting photos of the skifields blanketed in snow on to social media was a powerful marketing tool for attracting "late bookers".
"They’re the people with fewer commitments — double-income-no-kids or individuals who want to come over and enjoy great spring conditions.
"We’ve just activated our spring campaign both in New Zealand and Australia, so the timing’s perfect."
An extended period of continuous snowmaking preseason served the ski areas well, right until the natural snow arrived, he said.
"But it’s always nice to get the natural snow, because it covers the off-piste areas as well."
Despite the second dry July in a row, snowmaking was never curtailed through lack of water.
"We’ve had enough water in storage at Coronet Peak, and now we’re recharging the reservoirs."
At The Remarkables, snowmaking had been sustained by its permit to take water from Lake Alta.
"We’ve held back over about the last week to allow Lake Alta to recharge, but that’s been a lot easier to do with good natural snow."
The recent snowfall has also primed Coronet Peak for slalom and giant slalom racing at the FIS National Championships — featuring Queenstown’s Alice Robinson — from September 1-3.
