Six restaurants on Jupeater run a real, named happy hour - not just a restaurant that happens to have a bar. That's enough options to choose based on neighborhood rather than defaulting to whichever one you remember the name of.
U-Tiki Beach and Zunzibar both run daily happy hour with a water view, U-Tiki at the Jupiter Inlet and Zunzibar on the Intracoastal further south. Hap & Hooch, in South Jupiter, is a straightforward neighborhood bar-and-grill version. Lucky Shuck and Lewis Steakhouse both pair happy hour with a more food-forward menu than a typical bar. Voodoo Bayou, in Palm Beach Gardens, extends its happy hour latest into the night on Fridays and Saturdays.
Specials and time windows shift with the season more than almost anything else on this site, so treat the hours listed here as a starting point and confirm directly if a specific deal is the reason you're going.