The former Tottenham winger is being urged to stick it out in the Spanish capital by his compatriot.
The Stoke boss spent a single campaign with Barcelona back in his playing days, so knows all about the positives and negatives of stepping out in Spain.
Hughes said that Bale would regret leaving Madrid in the long run and that he should stick it out overseas for as long as he can.
"He's done everything right up to this point and having a huge impact over there but if he can, stay as long as you can," Hughes told BBC's Sport Wales.
"It's such an opportunity.
"From my own personal experience I made the mistake of thinking 'I'll just go for a couple of years and I'll be back home and continue my career' which is totally the wrong approach.
"When you get the opportunity to go to a club such as Barcelona or Real Madrid you've got to go with the intention that you're going to try and stay there for as long as you can until they actually kick you out of the door.
"I went there when I was 23 but I was a young 23. I wasn't married and I'd only just met my wife-to-be a couple of months before.
"It was difficult - I was out there on my own at times.
"If you have a good support network, which by all accounts Gareth has over there, I'd say stay as long as you can because you'll look back and think what a great experience that was.
"It shapes you as a person, as an individual and that shouldn't be underestimated what effect that will have on you in later years as well."
Bale has had a topsy-turvy time at the Estadio Santiago Bernabeu so far, with highs and lows over the last 18 months.
The ex-Spurs attacker scored the winning goal int he Copa del Rey final against Barcelona with a spectacular individual strike, while also netting in the Champions League final against Atletico Madrid.
However, in 2015 things have taken a turn for the worse for Bale, who has been singled out for criticism from the Spanish press and had a section of the club’s fans turn on him.
Speculation over the player’s future continues, with rumblings that the world’s most expensive player could return to the Premier League this summer.