While the Remarkables, Treble Cone and Ohau ski areas opened, Cardrona, Snow Farm, Snow Park and Mt Hutt joined Coronet Peak in closing yesterday.
NZSki chief executive James Codding-ton said saturated snowpacks had affected every skifield in the country.
"It's disappointing, but as far as timing goes, it's better at this time than at the start of the school holidays.
"It was a great school holidays ... a lot of happy customers from all over New Zealand and Australia.
Children's activities at Coronet Peak scheduled for the last day of the school holidays yesterday were cancelled.
"We're at the [mercy] of weather - it's certainly one of the challenges in operating ski resorts all over the world."
Mr Coddington said NZSki staff were looking for opportunities to make snow and the snowguns would start automatically as soon as the temperature dropped low enough.
"The likelihood we would be open and operating [today] is very high and we'll be working all night to ensure that happens."
