Yr.no has a nice range of forecasts. The Wave Height, Wind and Currents features work well for large areas - not so sure about specifically for a small bay or headland. I find the wave height feature very good.
Yr.no looks a bit clunky but it repays you in spades if you spend 10 minutes clicking around in it - some of the data displays are hugely usable and many have printer friendly options that are great for taking with you.