This site:
http://www.nswwaves.com.au/index.php
seems to be designed for touch screens.
On my desktop it prompts me to use
Ctrl + scroll to zoom in.
This did not work reliably for me using the mouse scroll wheel.

The advantage of it forecasting two days out; being able to dial up the hour and selecting any NSW beach
is lost on me if it does not have the zoom [+] & [-] buttons on the bottom right corner (standard with Google maps).