Latham's case strengthens as the long-term opening replacement for Brendon McCullum.
"It was nice to put a score on the board after coming home from Australia without doing so well," he said.
A raucous welcome rolled around the boutique ground as Latham went out to bat. While he was unaware of the initial support, it was impossible to ignore the standing ovation as he reached his hundred off as many balls.
"They're not really a loud crowd here in Christchurch, but when I got the hundred... well, it was a special moment for me.
"We lost wickets [regularly] until Colin came out, but we managed a good partnership [of 158] when the innings could have gone either way. We made up runs at the end, we used the shorter boundary with the [north-east] wind efficiently and ran between the wickets well on a big ground.
"If you look at our line-up there's a lot of power towards the back end, so if we wanted to attack in those last 10 overs we needed someone to stick there. Fortunately it was me."
Latham earned plaudits from Bangladesh captain Mashrafe Mortaza.
"He was up to the mark and, along with Munro, took the game from us. If we could've restricted them to 300 it might have been a different game.
"We bowled too many short balls to him. The New Zealand bowlers did it better by delivering them at head height. Ours were chest height which made them easier to play."