I'm not surprised

I'm not surprised

Said when something seems believable or logical. Paulina's learning Italian now? I'm not surprised—she's always had a passion for languages. Well, I'm not surprised you slept past noon if you went to bed at four in the morning!
See also: not, surprise
Farlex Dictionary of Idioms.

I'm not surprised.

 and I don't wonder.
It is not surprising.; It should not surprise anyone. Mary: All this talk about war has my cousin very worried. Sue: No doubt. At his age, I don't wonder. John: All of the better-looking ones sold out right away. Jane: I'm not surprised.
See also: not, surprise
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • be not cut out for something
  • address (one's) comments to (someone or something)
  • address comments or remarks to
  • address (one's) remarks to (someone or something)
  • be in it for
  • be not (oneself)
  • be strong on (something)
  • (something) is over (one's) head
  • be at a disadvantage
  • at a disadvantage
References in classic literature
"I'm not surprised that you are," returned Dorothy.
The Wonderful Wizard of Oz
I'm not surprised at that, though," he added, consulting the thermometer; "one hundred and forty degrees!"
Five Weeks in a Balloon
"I'm not surprised at that," said Uncle Alec, half to himself, adding, in his quick way: "Who have you had to play with?"
Eight Cousins
I knew you would come," he continued; "I knew I should wake up and find you here; so I'm not surprised. But last night I was very impatient.
American
"Sometimes," said Flambeau, looking after him, "I'm not surprised that they lynch them."
The Wisdom Of Father Brown
I'm not surprised. In 1642 we turned King Charles I away from the gates of Hull.
Wedding a right royal Hullabaloo
The Criminal Cases Review Commission (CCRC) has made a provisional decision not to refer the pickets' case to the Court of Appeal, and Ricky said: "I'm disappointed but I'm not surprised. Things have never been in our favour and won't be while the people behind all this are still alive - everyone knows it was a political trial."
Setback in Ricky's bid to clear name; NEWS WIRE
David John Freeman I'm not surprised. Driving eastbound I could see the flashes frequently on the cameras on one gantry.
Word on the web 13,000 drivers caught in first six months of variable speed cameras on M4..
To be honest, with all the shocking news that we receive here and around the world on a daily basis, I'm not surprised that Congress approved a proposal to reinstate the death penalty.
What the death penalty looks like
I'm not surprised so many viewers were in tears when her trusty shoes were placed atop that coffin.
Having a bawl at the Midwife
I'M not surprised to see Nathan Cleverly working with Adam Booth as he seeks to rebuild after that painful first career loss to Russian Sergey Kovalev.
Booth move makes sense as Cleverly looks to future
I'M not surprised Liam Gallagher fought tooth and nail to hide the fact he has fathered a secret love child with US journalist Liza Ghorbani.
Hell for Nic on Liam kid
I'm not surprised. The first time it swept through the team faster than a swish of Jerry Hall's marabou throw.
Richard Arnold's VERDICT
I'M not surprised that the Olympic football tournament taking place at St James' Park has been such a massive success.
Fans back Olympics
I'm not surprised, as they were unnecessarily complex, with far too much choosing and opening of boxes.
Job's not a good 'un