Joe Jonas and his buff bod are certainly enjoying the sweltering LA heat!

The middle Joe Bro lead the way for a family excursion to Coffee Bean and Tea Leaf in Beverly Hills.

Jonas, who kept it casual in black and white striped board shorts and tennis shoes, proudly displayed his bulging biceps in a white tank. Eye candy, indeed. Just last night, Joe hung out with Tom Cruise's 17-year-old son, Connor. Must have been a good ol' time.

Nothing like getting a morning jolt from a tasty caffeinated drink ... and from seeing the sexiest Joe Bro in all his muscular glory!