Toss in a pair of shorts. We had one day that ended up being very warm and we didn't have "warm" weather clothing so it got a bit hot by the end. If you have any port excursions that take you out into the wilderness be prepared with long layers. We went to Taku Glacier Lodge, which was awesome, but the mosquitoes were so big that when you hit them in the air you could feel them! They provided bug spray, but even with that having long sleeves, pants, and a hood on the jacket helped keep them at bay! Pack some sort of hat/ear muffs if you don't like cold ears on glacier day. It can get windy and cold (esp. if you take the tendered boat port adventure up to the glacier like we did) and even with just a few layers of sweatshirts the added hat was nice!