The 18-year-old won his first Grand Slam title along with Gordon Reid.
The second seeds came from a set behind to beat top seeds Stephane Houdet and Nicolas Peifer 4-6 6-1 7-6 (8-6).
"I actually had to re-watch the match point because I just couldn't remember what had happened," Hewett told BBC Radio Norfolk.
"One of the players asked what was the rally like at match point and I couldn't answer them, I just couldn't remember what had happened - it was an insane moment.
"Thoughts start coming in your head about winning two or three points before, you've just got to try to keep as calm as possible."
Despite his success, Hewett was asked if he would rather be a Wimbledon champion or watch his team Norwich City win at Wembley? "Wembley, all day long."
Wimbledon men's wheelchair doubles champion Alfie Hewett has revealed that he forgot the winning rally of their final.