I do boat in this area frequently and Bob is right, You could have zero wind, or it could be 50+. Lost Petral is right about the currents, which are much more predictable. From PT to Victoria there are going to be precious few islands to use for current shadow. (Protection Island, and then the southern tip of Vancouver Island mainly.) You will have some lee from Dungeness Spit that you can take advantage of.
There are a set of published tables, previously, they were called Washburne's Tables, but in 2014, they are called Waggoner's Tables, that are extremely helpful, and you can plot current direction and strength by the hour. I would recommend acquiring those for planning.
The major considerations for this IMHO would be 1. Weather (fog is always a consideration there that time of year.) 2. Current planning 3. Marine traffic ( They are almost all bigger than I am, and travel faster --Victoria Clipper specifically). and 4. Self rescue capability.
Leaving Port Townsend at 0500 in June there is likely to be very little wind that early in the day. that is my usual time to leave Sequim for a Strait of Juan crossing (Out of the bay before the sun breaks the horizon. Pretty much guarantees a peaceful (read flat --as in no wind) crossing. Then depending on the conditions, (stable high pressure vs moving fronts or a low ) the morning breeze will pick up between 9-11AM and depending on the tide and current set, the surface can go from rollers to washing machine.
The winds can come from any direction, generally closer to the shore they will angle shore-ward, pulled by the thermal draw over ground and up the valleys.
By 0900 I am , if crossing, well past the entrances to Juan de Fuca.
Hope that helps, and Please keep us posted about your decision on this. it would be fun to be on the Strait and get to see this race happening.
Harvey
SleepyC :moon
Some days are not like this:
