Ilha do Arvoredo
Protected Area
Reserva Biológica Marinha Do Arvoredo
Why dive here
With 55+ marine species recorded in the area - including humpback whales - Ilha do Arvoredo offers some of Arraial do Cabo's richest diving. Water ranges 22-28°C, warmest January, February, March.
Ilha do Arvoredo, in Arraial do Cabo, is one of our top picks in this part of Brazil. We love its distinct personality, a real step up from some of the more inshore sites. As you drop in, that classic cold-water upwelling clarity hits you straight away; you really notice the difference. The reef structure itself is varied, with some interesting rocky outcrops and small caves that you can peek into. You’ll often find banded pipefish tucked away here, and the black margates seem to hang around the deeper ledges. We’ve had some cracking encounters with permit and mutton snapper here, cruising past in the blue. Keep an eye out for the smaller stuff too, like the seaweed blennies doing their thing on the rocks. While the currents can be moderate, they're rarely overwhelming, and it’s that flow that brings in the bigger fish. We’d suggest going early in the morning to beat the boat traffic and catch the light streaming through the water. It’s a consistently rewarding dive, perfect for anyone who appreciates a vibrant, healthy ecosystem.
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Conditions
Ocean conditions, forecast and tides for Ilha do Arvoredo
Ilha do Arvoredo Ocean Conditions
Monthly averages for Ilha do Arvoredo, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-23.23, -44.16) (12km away)
October Averages
Sea Temperature
23°C
73°F · Range: 17.8–26.6°C
Current Speed
8.49 cm/s
Direction: SW (225°)
Salinity
35.38 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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