It will now close on September 29, instead of tomorrow.
"It’s primarily aimed at the locals, because Coronet’s just skiing so well," NZSki chief executive Paul Anderson said.
He is also hoping for some Australians because Queensland’s school holidays have started and New South Wales’ are about to begin.
In the past week, Coronet has had about 95cm of snow at base and more than a metre at the top, while sister field The Remarkables, which closes October 13, at the end of the New Zealand school holidays, has had 1.3m this month.
Concerning Coronet, Anderson says "we will close Heidi’s and Rocky Gully, but we’ll keep the three chairlifts and three magic carpets going all the way through".
He has got no doubt the snow will hold up.
"It’s going to be pretty cold up at that elevation through to early next week, and then it’ll warm up into a normal spring pattern where they’ll get some nice spring corn skiing."