He missed the second test against India in Kolkata due to illness. His side can only be judged on how they play the opposition in front of them, but the transition from Brendon McCullum to Williamson has been smooth and would only be enhanced if the side continued that record in next summer's series against the West Indies and England.
The 26-year-old maintained his batting excellence to average 59.94 in tests during the period, including four centuries. He averaged 40.88 in 18 ODIs and 52.66 at a strike rate of 114 in four T20Is.
Neil Wagner claimed the test player of the year prize and the Winsor Cup for first-class bowling. He took 56 wickets from 13 tests. Wagner became the second fastest New Zealander to 100 wickets in 26 matches behind Hadlee's 25.
Martin Guptill was named ODI player of the year with an aggregate of 570 runs at an average of 47.50. His season was highlighted by a match-winning 180 not out against South Africa in Hamilton.
White Fern Amy Satterthwaite's historic season saw her recognised as women's ODI player of the year. Satterthwaite finished the judging period with 935 runs at an average of 103.88, and strike-rate of 96. Her four consecutive centuries, scored against Pakistan and Australia, equalled the world record set by Sri Lankan Kumar Sangakkara across men's and women's ODI cricket.
Satterthwaite's captain Suzie Bates won the women's Twenty20 player of the year after leading her side to a series victory in Australia.
Taranaki Cricket Association life member Neil Sulzberger received the Bert Sutcliffe medal for outstanding services to cricket after dedication spanning more than 50 years.
New Zealand Cricket Awards winners:
Sir Richard Hadlee medal for player of the year: Kane Williamson
Test player of the year: Neil Wagner
Men's ODI player of the year: Martin Guptill
Men's T20I player of the year: Kane Williamson
Women's ODI player of the year: Amy Satterthwaite
Women's T20 player of the year: Suzie Bates
Winsor Cup (men's first-class bowling): Neil Wagner
Redpath Cup (men's first-class batting): Kane Williamson
T20 domestic player of the year: Glenn Phillips
Ruth Martin Cup (women's domestic batting): Katey Martin
Phyl Blackler Cup (women's domestic bowling): Leigh Kasperek
Bert Sutcliffe medal for outstanding service: Neil Sulzberger