Vava'u Group

The Vava'u group is an archipelago of roughly 50 islands and islets in northern Tonga, centred on the large island of Vava'u and its natural harbour at Neiafu. The harbour — Port of Refuge — is a drowned valley system that produces a deepwater anchorage surrounded by low forested islands, generally regarded as one of the finest cruising destinations in the Pacific. The primary draw from July to October is humpback whale watching: the sheltered Vava'u waters are a key calving and nursing ground for Southern Ocean humpbacks, and operators run permitted swim-with-whale encounters (Tonga is one of the few countries that permits this in regulated form). The whale season defines the tourism season — the charter fleet, the dive boats, and the restaurants all operate at peak capacity from July through October and scale back dramatically in summer. Outside whale season, the island group offers sea kayaking in the channel network, a productive fishing charter fleet, and the cave and snorkel sites around the outer islands. Swallows Cave on Kapa Island is accessible by kayak at water level. Pacific mixed semidiurnal, spring range 1.0 to 1.5 m. Predictions come from Open-Meteo Marine (gridded model, ±45 min / ±0.2–0.3 m).