http://www.capecodweather.net/. If you can, schedule your whale watch in front of bad weather rather than on the backside of it. It can take a couple of tide changes to settle things down after a good blow. Wind is our nemesis in the whale watch business. Wind causes waves, and waves make the boat move in odd ways, if you get my drift. For your comfort, look for days with the least amount of wind being forecast.