Glacier Bay National Park is situated in the Alaska panhandle, to the west of Juneau, the capital city. Glacier spotting is best done by boat and there are many day trip options available from within the park. Alternatively there is the option to view the glaciers from above, in a float plane or helicopter tour.
Water temperature approximately 37 degrees. After a week absorbing the phenomenal beauty of Alaska's inner passage, it was great to take the absolute plunge! The water was silty from the glaciers that feed into it, but felt fantastic. I jumped in twice!
Glacier Bay is accessible by ship or kayak and is one of the great wilderness areas of the US.