CHRISTCHURCH, NEW ZEALAND - DECEMBER 22: New Zealand Black Caps captain Brendon McCullum speaks during a press conference on December 22, 2015 in Christchurch, New Zealand. The 34 year old will play a world-record 100th consecutive test for New Zealand when the Black Caps face Australia at the Basin Reserve on February 12, 2016. (Photo by Kai Schwoerer/Getty Images)

New Zealand captain Brendon McCullum has confirmed he will retire from international cricket following the Test series against Australia early next year.

The Black Caps will host the Aussies for Tests in Wellington and Christchurch in February, a two-match series that will be McCullum's international swansong.

The 34-year-old said his decision to announce his retirement now was borne of circumstance; the squads for the World T20 in March and April must be announced before his intended retirement date, and he was keen to avoid any speculation.