There are always spots inside that are fishable. Well...I shouldn't say always before someone corrects me as I am sure January can be quite ugly...but at this time of year it is a darn safe bet. Tahsis Inlet, Hoiss, Strange, San Carlos, Camel Rock, the Wall etc. should all be good. It just means a run outside to Bajo Reef is out of the cards. Most of the good spots "out front" are under 77cm only after next Tuesday, so you will likely want to stay inside anyhow. Typically the "inside" is inside of the lighthouse at Friendly Cove and Burdwood Point across the water. Most of the inside fishing is done from Strange Isl inwards. Although Saveedra, Boston Point, Burdwood can all produce too. There is always lots of help on the dock there and you will quickly pick up on what has been producing.
Muchalat Inlet can be nasty though. Make sure you run out from the Gold River launch early in the am as a very healthy chop certainly does come up in Muchalat...similar to the Alberni Canal. Once you get close to Bligh the chop typically dies down.
As far as weather for out there, I like to use Swellwatch for offshore/out front predictions, gives you size of swell, how many seconds and wind forecast (Think I read a post from Seafever a couple days ago where he stated same).
We go into Critter on the 18th and out on the 21st. Will just miss ya. For what is worth, the exact dates you will be there were fantastic last year. Tight lines and good luck.
Brock