The New Zealand bowlers conceded 3.99 runs an over, suggesting the pitch held few batting demons despite the weather disruption.
Off spinner Mark Craig might have some footmarks to exploit should the match have time to progress beyond the forecast thundershowers.
He had Gayle caught at long on but did not threaten to the same extent as Sulieman Benn with his five-wicket bag on the opening day.
Wagner looked tidy with one for 11 from 7.2 overs. He coaxed Brathwaite into hitting a catch to Tim Southee at short cover.
New Zealand convinced the umpires to change the ball after 24 overs of the West Indies innings when the score was 89 for one but the decision came with limited reward.
Southee and Trent Boult must elicit more penetration as the strike bowlers should New Zealand return to the field.
The series is tied 1-1.