It was likely to get up as high as 32km/h, she said.
There was the prospect of showers on Saturday morning but conditions were expected to improve by the time racing started.
"In terms of any rain it's not looking too significant. We could see just a passing shower or two over the area," she said.
Similar weather was forecast for Sunday but with a touch more cloud. However, any showers were expected to come through after lunch.
"For the races or any spectators that's the time we can expect the passing showers," she said.
It was a very different story in the south with a wet weekend in store for the west of the South Island. A heavy rain watch had been issued for Westland and Buller Ranges to Fiordland tomorrow.
Makgabutlane said while the rest of the island would enjoy a mainly fine day, the centre of the country from Canterbury high country to Wairarapa would be buffeted by strong winds with central eastern regions under a strong wind watch.
The North Island western regions would see showers in the morning while eastern parts would enjoy beautiful weather.
Temperatures would be sitting in the mid-20s in eastern regions of both islands on Sunday with some parts even knocking on the door of 30C.
"If people do have any outdoor plans it shoud be fairly pleasant conditions," she said.
Long range forecasts show the east will enjoy a spell of stellar weather thanks to a heatwave, with temperatures expected to reach 31 in Christchurch on Tuesday and a sweltering 34C in Hastings on Wednesday.
