When To Go · Destination Guide
O'ahu, Hawai'i
Wrecks off Waikiki, lava caverns out west, and summer shore-diving windows up north
When To Go · Destination Guide
Wrecks off Waikiki, lava caverns out west, and summer shore-diving windows up north
When to go
Diving is viable year-round on O'ahu.
Best overall window
Leeward glass in mornings, tradewinds around 20 km/h to 35 km/h.
Outside that window
Winter surf on north and east coasts. Choose leeward charters and protected bays.
Start with the overall answer, then switch only when scuba, freedive, snorkel, or topside timing changes the trip in a meaningful way.
The overall row stays visible so you can compare it against the currently selected scope.
| Scope | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall | Overall - Jan: Tradeoffs | Overall - Feb: Tradeoffs | Overall - Mar: Good | Overall - Apr: Best | Overall - May: Best | Overall - Jun: Best | Overall - Jul: Best | Overall - Aug: Best | Overall - Sep: Best | Overall - Oct: Best | Overall - Nov: Good | Overall - Dec: Tradeoffs |
These do not replace the overall planner. Use them only if a specific animal or event is driving your trip dates.
Humpback Whales
Best for Scuba, Snorkel, Topside
Nov to Apr
Whale song is often audible on south and west dives.
North Shore Big Surf
Best for Topside
Oct to Mar
Spectate at Waimea Bay and Pipeline.
Box Jellyfish Windows
Best for Snorkel, Scuba
Check current season
Typically 8-10 days after the full moon on south shore beaches.
Built from climate references, access rules, and destination operators. Wildlife timing and route flexibility can shift year to year.