17 of 85 destinations scored for coast and lakes are prime in December — 80 or better on conditions alone. Highest: Kerala (95), Krabi & Railay (95), Bariloche (90). In November 10 are prime; in January, 20.
Every destination scoring 55 or better for coast and lakes in December, 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.