A race delay appears likely for what could be the final day's racing of the America's Cup regatta.
New Zealand can defend the 'Auld Mug' with two race wins, after their sensational pair of victories on a thrilling Monday.
Light winds are predicted for Tuesday's action with a southwest breeze forecast to arrive about 5pm.
MetService is predicting a wind speed of 5-10 knots for race time, but up to 12 knots have been forecast for 6pm - which is the cutoff time for racing to begin.
Event boss Iain Murray has confirmed racing will take place on Course C.
Orakei, Bastion Point, North Head or any other elevated position along Tamaki Drive are where organisers are suggesting people come together.
Earlier, sailing guru Mark Orams told Newshub the spectator-friendly Course C would likely see action for the first time in the match, although it's unlikely the wind speed will reach the 6.5 knot threshold until after 5pm.
"As we approach the 6pm cut-off time for a race start, the models do have the wind strength increasing to 8-10 knots, with some models predicting as much as 12 knots," Prof Orams says.
"It will all be dependent on the timing of the movement of the front.
"Southwest breeze is shiftier and more variable because it comes off the land and is affected by headlands and valleys, as well as the geometry of the inner harbour.
"North Head can come into play tactically if the course is set in close proximity because the southwest wind tends to accelerate and bend around this headland.
"It will be yet another tricky light wind sailing day."