Would anyone who had cruised Alaska in May describe the weather / temperatures that had, the hours of daylight, excursion cancellations, wildlife sightings, etc. I know every trip is different just trying to get an idea...
I did the May 22 sailing this year. Temps ranged from lows in about the low 40s (which can feel pretty cold when outside on a moving ship) to maybe right around 70. We had at least some rain most days.
Glacier day started out a little foggy and drizzly, but cleared up by late morning. We did the second Glacier Explorer and it was wonderful. We got much closer to the South Sawyer Glacier than the ship did and also went to the North Sawyer Glacier (South is way better). Saw seals (no pups...too early in the season) and mountain goats. We also had an incredible encounter with a pod of orcas in the beautiul green glacial fed waters. We spent easily a half an hour with them. It was chilly but overall pretty pleasant.
Skagway was overcast pretty much all day with some light rain off and on. We did our own thing on this day, renting a car and driving the Yukon Highway into Canada as far as Emerald Lake and back. Didn't see any wildlife, but based on the pictures of others that day, we probably had some near misses with black bears.
Juneau was more of the same. A little foggy early, overcast, intermittent light rain. We did a combo whale watching and Mendenhall Glacier excursion that we booked independently with Juneau Whale Watch. The whale watch was first, early, around 8:30/9. It was very chilly out on the water, but we didn't have rain during the cruise. Saw several different humpback whales, including some lunge feeding. At Mendenhall, we had a bit of light rain while walking out to Nugget Falls, but it didn't last too long. We saw some arctic terns and a porcupine here.
Ketchikan was also a little foggy early, then overcast and drizzly most of the time we were there. We did a scenic cruise to Misty Fjords National Monument, which we booked through Disney, given the length and how close to all aboard it was going to be returning. This was probably our least favorite of the port activites we did and will find something different to do next time.
The final sea day was probably the clearest and warmest. During the day, I was able to be comfortable in short sleeves or a light jacket out on deck.
Southeast Alaska is a wet place. Ketchikan is one of the wettest places in the US. Tongas National Forest encompases most of SE Alaska and is a temperate rainforest. Be prepared for wet conditions and consider it a pleasant surprise if you get clear sunny skies. I highly recommend a waterproof outer layer and waterproof shoes. I'm from Florida originally, live in Georgia now, and consider myself a cold weather wimp. I get chilled to the bone really quickly. I layered up, had waterproof outer layers when needed, and had a great time throughout the cruise and spent a lot of time out on decks.