When To Go · Destination Guide
Abrolhos Marine National Park Brazil
Brazil's protected coral bank and whale season expedition out of Caravelas
Updated Jan 23, 2026 • 10 sources
When To Go
Season planner for Abrolhos Marine National Park
Abrolhos has two headline seasons. For underwater visibility and warmer water, aim for December to March. For humpback whales, plan June to November, on peak sightings commonly July to October. Winter can bring stronger winds and rougher crossings, so keep a buffer day and watch forecasts.
At A Glance Heatmap
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall | ||||||||||||
| Scuba | ||||||||||||
| Freedive | ||||||||||||
| Snorkel | ||||||||||||
| Topside |
Activity Drilldowns
OverallDec-Mar (reef clarity) & Jul-Oct (whales)·Crowd:Moderate·Cost:Premium
Ideal: Warmer water 24°C to 27°C, generally better visibility and more comfortable surface intervals.
Plan Carefully: Start of whale season and windier patterns; crossings can be uncomfortable and cancellations are more common.
If you can only pick one window, choose based on your priority: clearest reef diving (DecMar) or whales (JulOct).
ScubaDec-Mar·Crowd:Low To Moderate·Cost:Premium
Ideal: Best odds for calm seas and clearer water; longer, more comfortable dive days.
Plan Carefully: Whale season brings spectacle but also more wind and surface chop; keep dives conservative and expect schedule changes.
If your trip is whalemotivated, book early for July to October and keep your dive goals flexible.
FreediveDec-Mar·Crowd:Low·Cost:Premium
Ideal: Calmer surface conditions improve safety for lines, floats, and recovery breathing.
Plan Carefully: More wind and chop; treat freediving as optional unless the day is calm.
Freediving is most enjoyable when the surface is glassy.
SnorkelDec-Apr·Crowd:Moderate·Cost:Premium
Ideal: Warmer water and typically calmer seas, making it easier to stay relaxed at the surface.
Plan Carefully: Windier patterns can make long surface swims uncomfortable; rely on guided moorings and floats.
If you are not a strong swimmer, prioritize summer months and ask for protected snorkel stops.
TopsideJul-Oct·Crowd:Moderate·Cost:Moderate To Premium
Ideal: Best whale watching window. Bring a wind layer for boat spray and long deck time.
Plan Carefully: Hotter and often busier on the coast; build rest time around early boat departures.
Brazilian school holidays can raise prices and reduce availability, especially in December, January, and July.
Seasonal Callouts Timeline
Humpback whales (breeding and calving season)
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecAbrolhos Bank is Brazil's best-known humpback nursery. Expect frequent surface sightings on crossings and between dive sites. Follow approach-distance rules and keep whale encounters topside only.
Sea turtle nesting and hatchling season
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecThe wider Bahia coast has sea turtle nesting seasons that typically run from spring through summer. Keep lights low on beaches at night and follow local guidance if you visit nesting areas.
Seabird colonies on the islands
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecThe archipelago is a key seabird habitat. Viewing is best from marked trails and designated areas, with distancing to avoid nesting disturbance.