Making the most of his downtime, the "Baby" singer tossed on his swim trunks as he joined rumored girlfriend Jasmine Villegas for a boating excursion on Friday (October 8).
Hopping aboard a Hawaiian catamaran, The Mai Tai, Bieber and Villegas were joined by Jaden Smith and family members as they cruised the waters off of Waikiki Beach.
Tweeting his Hawaiian excitement, Justin happily wrote, "Hawaii great night and great vacation here. me, jaden, and @JASMINEVILLEGAS all had a great time. thank u. cant wait to come back!!"
Also noting his upcoming plans, the 16-year-old tweeted on Sunday (October 10), "off to Japan 2morrow!!! Flying in fans from all over Asia! Looking forward to seeing everybody"