The second seed raced through the first set in just 30 minutes, dropping just two points on his serve.
The second set was a similar affair as Ruud broke fourth seed Humbert early on and easily served out the match, dropping only one point on his serve in the second set.
He wrapped up victory in just 68 minutes.
"I would like to congratulate Ugo for his week, and sorry about today. I think I played the best match of the year against you, so I am sorry. I am really happy, but sorry, Ugo," Ruud said on court after the game.
"I know that against you, if I don't play well, you will destroy me. So I knew I had to wake up and play well.
"All the legends have played here in the past. (Roger) Federer, (Rafael) Nadal, (Bjorn) Borg, (John) McEnroe, you name it. So it is an honour to get a title here."
It was Ruud's second title of 2025 after his victory at the Masters 1000 in Madrid at the beginning of May.
