7 of 55 destinations scored for swimming are prime in May — 80 or better on conditions alone. Highest: Maui (94), 30A & the Emerald Coast (91), Belize: the Cayes & the Barrier Reef (89). In April 12 are prime; in June, 5.
Every destination scoring 55 or better for swimming in May, highest first. Ties are listed alphabetically.
Most places have one or two months that are genuinely better — and a booking moment that comes a lot earlier than the trip. I’ll write when one of those is coming up. No schedule, no filler.
Somewhere missing from the list? Write to info@pennyswindow.com and I’ll score it.