Hello. We did a 10 day Alaska cruise, that departed last July 7th. I had been checking the weather forecast, so we were prepared for the cold. It was cold most days. Occasional light rain. One day in particular, was so cold, we could not get warm enough. Now, we were sitting on the aft deck, facing the back of the ship, watching the inside passage go by. We didn't let the weather stop us. That prior year, my parents went in the begining of July, and they were very warm. So, my suggestion is to check the 10 day forecast on weather.com they have some Alaska cities listed. Pack your clothes according to the forecast. That is what we did. Hope this helps. Lil' Lori