published by surfline, this page displays the forecast for copacabana beach - also by surfline, this clickable map shows the height of the waves on a number of beaches in both rio de janeiro and niterói - and this chart shows the forecast for all waves in rio's southern region.

this page, published and updated daily by the brazilian navy, shows the overall daily forecast for rio de janeiro state's coast, including waves (ondas), visibility (visibilidade), and range of daily temperatures (temperatura).

this link shows copacabana beach on a wikimapia- the link as we present it is best seen using google chrome, as other browsers might not open at the correct zoom settings.