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Brazilian Navy Warns of Rough Seas With 3-Meter Swells From Ilhabela to Arraial do Cabo

A passing low-pressure system is driving south to southwest swells that demand strict beach and boating precautions.

Overview

  • The Navy issued rough-sea alerts for the coast between Ilhabela (São Paulo) and Arraial do Cabo (Rio de Janeiro), with waves expected around 2.5 to 3 meters and varying time windows by location.
  • In Rio de Janeiro, the warning applies to the city’s waterfront for a set daytime period, while parts of the broader São Paulo–Rio stretch are expected to remain under alert into the next night.
  • Officials attribute the event to a low-pressure system offshore that is pushing long-period swells from the south to southwest toward the coast.
  • Authorities advise people to avoid swimming and water sports, stay off seaside lookouts, keep small boats in port, check bad-weather notices before sailing, and call 193 for the fire brigade in an emergency.
  • Recent scenes at the Leme seawall, where a surge swept away chairs and knocked a woman off balance, show how ressaca waves can run past the normal waterline and catch beachgoers off guard.