Tonga
Blue Hole
About this Dive Site
Description
Descend into the crystal-clear waters of the Blue Hole in Ha'apai, Tonga, a dramatic vertical shaft plunging to 22 meters. This unique geological formation is a haven for impressive groupers, swift trevallies, and the occasional sighting of grey reef sharks.
Best Time to Dive
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30°C | 30°C | 30°C | 29°C | 29°C | 28°C | 28°C | 28°C | 28°C | 29°C | 29°C | 30°C |
Peak Season
May, June, July, August, January, February, March, April, September, October
Jan
Humpback whale calving season begins, good chance of seeing mothers and calves.
Feb
Continued humpback whale activity, especially mothers and calves.
Mar
Peak humpback whale season, more frequent sightings and interactions.
Apr
Humpback whales begin to depart, but some may still be present. Manta ray season starts.
More monthly highlights
May
Excellent manta ray feeding opportunities.
Jun
Prime manta ray season, often seen at cleaning stations.
Jul
Continued excellent manta ray diving.
Aug
Manta ray season winding down, but still good sightings.
Sep
Good visibility, potential for pelagic species.
Oct
Plankton blooms can attract smaller marine life.
Nov
Rainy season begins, visibility can be reduced.
Dec
Humpback whale calving season begins.
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