When To Go · Destination Guide
Sheltered Coral Triangle reefs, volcano slopes, and easy boat logistics
Updated Nov 3, 2025 • 13 sources
When to go
Diving is yearround.
Best overall window
Drier weather, smoother seas, water around 27°C to 29°C.
Outside that window
Westseason winds and squalls; pick leeward sites.
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: Good | 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.
Green and hawksbill turtles nesting
May to Sep
Observe quietly with local guides, avoid lights, and keep distance.
Non-stinging jellyfish lake swims
Year-round
Finfree swims with guides at Mariona.
Spinner dolphin sightings
Year-round
Pods sometimes bowride during island crossings.
Built from climate references, access rules, and destination operators. Wildlife timing and route flexibility can shift year to year.