The Colombian international, who operates primarily on the wing, has settled quickly at the Bundesliga giants and believes the overall level of talent at the club is exceptionally high.
However, Diaz singled out Kane for special praise, expressing amazement at the consistency and impact of the England captain in Bayern's attack.
"Wow. Harry Kane... is incredible. I faced him many times back when he was with Tottenham so I knew him on the pitch but never shared it with him.
"Because one thing is seeing him and the other is sharing with him in training or in the dressing room. He surprised me.
"He does things in training where I say to myself, 'this can't be.' He's so good. So good. It's the truth! He plays so much and does everything well. Hunts for the ball, passes, defends - you watch him defend, he dedicates himself so much, someone so calm... and yet he scores goals.
"This guy lives for them. Each one that comes to him - once, twice, three times - he scores all of them. He's also a great person. Very down-to-earth, family-orientated... just a spectacular person."
At 32, Kane continues to perform at an elite level. He has already scored 30 goals across all competitions this season, including an impressive 19 in the Bundesliga.
His clinical finishing and leadership have played a central role in Bayern's remarkable run of form, which has seen the club embark on a record-breaking 16-game winning streak.
Jonathan Tah has said Vincent Kompany played a decisive role in convincing him to join Bayern Munich, with the defender insisting the move has already helped him grow as a player.
Jonathan Tah has expressed optimism over Dayot Upamecano's future at Bayern Munich, insisting his defensive partner "feels very, very comfortable" at the club.
Luis Diaz has said he is enjoying both his football and his life in Munich after completing his move from Liverpool to Bayern Munich in the last transfer window.
Max Eberl has praised Bayern Munich's mentality and togetherness after they ended the year with an emphatic 4-0 away victory over Heidenheim, insisting the players have shown exceptional focus through a demanding 2025.
