Welcome to the Wave Forecast service provided by SurferToday.com and NOAA.
Check the Wave Height Forecast for Brazil, Mexico and the East Coast of the USA, in the next seven days:

 

Brazil, Mexico and East Coast USA Wave Height Forecast

What is Wave Height Forecast? The NOAA Interpretation

The significant wave height is a measure of the wave height and closely corresponds to what a trained observer would consider to be the mean wave height. Note that the highest wave height of an individual wave will be significantly larger.

NOAA - National Oceanic and Atmospheric Administration