When To Go · Destination Guide
Shipwrecks and sanctuary reefs backed by Atlantic Forest waterfalls
Updated Jan 23, 2026 • 18 sources
When to go
Ilhabela is a yearround destination, but conditions shift with rainfall, wind, and cold fronts.
Best overall window
Drier feel and cooler evenings, good hiking comfort and fewer insects; water often cooler
Outside that window
Peak summer crowds, heavier rain and humidity; visibility can drop after storms and ferry lines grow
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: Tradeoffs | Overall - Apr: Good | Overall - May: Best | Overall - Jun: Best | Overall - Jul: Best | Overall - Aug: Best | Overall - Sep: Best | Overall - Oct: Good | 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.
Sea turtles and reef fish at Ilha das Cabras
Best for Snorkel, Scuba, Freedive
Year-round
Ilha das Cabras is a protected sanctuary where divers and snorkelers regularly spot turtles, schooling reef fish, and macro life along the rocks in 1 m to 12 m water.
Best odds for warm-water diving
Best for Scuba, Snorkel, Freedive
Oct to Apr
Plan your highestvolume dive trips for October to April when water is commonly 24°C to 28°C and operators tend to run more departures (weather permitting).
Summer rains and waterfalls at peak flow
Best for Topside
Dec to Mar
Rainyseason humidity brings fuller waterfalls and lush trails, but also muddier paths and more mosquitoes.
Migrating whales and frequent dolphins offshore
Best for Scuba, Snorkel, Topside
Jul to Oct
Winter to spring offers better odds of offshore whale sightings and regular dolphin encounters on boat crossings.
Semana Internacional de Vela de Ilhabela (Sailing Week)
Best for Topside
Jul to Aug
The island's flagship sailing festival typically lands in late July and early August, adding regattas, waterfront energy, and fuller hotels in Vila.
Borrachudo (biting midge) season
Best for Topside
Nov to Mar
Biting midges are a wellknown Ilhabela nuisance, especially near dusk, after rain, and around vegetation.
Built from climate references, access rules, and destination operators. Wildlife timing and route flexibility can shift year to year.