Some Quillayute-y Information

The town of Quillayute is actually really small. The ASOS is at the airport which basically serves the towns of Forks (to the east) and La Push (to the west, on the Coast). The elevation is 192ft and is in hilly, but not mountainous terrain, close to the coast.

Latitude: 47.93750; Longitude: -124.55500

Here is a link to the sea surface temperature at La Push:
(EDIT: The last link I posted was for historical data. This site has buoy data under "current weather" Sorry for the confusion)
http://www.swellinfo.com/surf-forecast/la-push-washington.html
That might be useful in your forecast, especially when you suspect the wind to be off the water.

Click the image below to get a general overview of the area: