And the forward has revealed what the 'Special One' said to convince him to leave boyhood club Chelsea for the Italian capital.
The 24-year-old swapped Stamford Bridge for the Stadio Olimpico in search of game time and it's proved to be a superb move, with the £34million man scoring four goals in his first 10 matches under Mourinho.
His glittering start to life in the Italian capital has seen him recalled to Gareth Southgate's England squad, having last appeared for the Three Lions in November 2020.
And Abraham, who netted a hat-trick in Frank Lampard's last game in charge at Chelsea before falling out of favour under Thomas Tuchel, has admitted Mourinho's charm was a big factor in swaying him for a move to Italy.
"The first thing he said to me was when I picked up the phone he was like 'do you want to enjoy some sun or stay in the rain?' I laughed," Abraham revealed with a smile.
"I think at first I did not think much of it when we were speaking. I think my mindset was that I wanted to be in the Premier League and I wanted to stay here.
"I feel like it was home, being around London, being around England. It was home. And I think I had to open my wings a bit and make a choice and I chose Italy and would not change it.
"I have learned so much tactically - as much as I have in my entire lifetime. It is good. You need to learn off different managers. Right now I am learning a lot."
Abraham is enjoying the limelight Mourinho told him to expect in the Italian capital, plus the chance to learn a language, experience a different culture and visit new places.
The 24-year-old says he loves learning but revealed he has been through adversity this year, admitting he 'didn't really understand' why he did not get more opportunities under Tuchel.
"I think the easy option would've been to stick around and sit down," Abraham said.
"Chelsea's a massive club, they will compete and try to win trophies so the easy option would've been to do that.
"I realised that I needed to go out and prove myself, I needed to play some games. I took a decision and it was the right one.
"I think at first it's quite tough to deal with. You've gone from playing regularly to not being in the mix and not even making the bench sometimes. I got to a point where I had to sit down and talk to myself. I was going out to train and I was doing it for me.
"I was going to train to better myself because it's easy to throw a strop, to be angry around the place, to be a bad egg.
"For me, it was the opposite. I learned about myself and I think that strengthened my mindset. I was with the team whenever they needed me.
"Players like Mason (Mount), Reece James, Callum Hudson-Odoi - the players that are younger than me, I kind of had to lift them and be their support, help them and encourage them.
"At the end of the day, we won trophies as a team so I have to thank them for that."