The shirtless "Mistletoe" singer sported a pair of navy swim trunks as he joined alongside an elder gentleman for the Mexican beach excursion.
And while he's currently enjoying the relaxing getaway, Justin tweeted his plans to get back to business once returned to the States.
The 17-year-old wrote, "start work on #BELIEVE again full time in the studio next week. #workingonideasNow - this one is for the fans and the haterz. love u both."