🇺🇸 Glacier Bay, United States — Cruise Port Guide
A national park with no roads, no town and no dock — the ship is the only way in, and only two are permitted each day. Park rangers board at the mouth and narrate as you push 65 miles up a fjord that was solid ice 250 years ago.
Updated September 2026
Quick facts
Getting ashore
When to visit Glacier Bay
Ships only enter between roughly May and September, and the National Park Service permits just two cruise ships a day. If Glacier Bay is on your itinerary, that permit is a significant part of what you paid for.
Good to know
There is nothing to book and nothing to miss except by being indoors. Dress properly — it is 5 to 10°C on deck and colder near the ice — and get outside early, because the best hours are often the first ones.
Things to do in Glacier Bay
Margerie Glacier
The main event. Ships hold position in front of the face for an hour or more and usually rotate the vessel so both sides get the view — if you are on the wrong side, wait rather than move.
Listen to the ranger talks
Rangers run commentary from the bridge and give talks in the theatre through the day. The Huna Tlingit interpreter's session is the one people remember.
Watch for calving
Locals call the sound white thunder. The crack comes seconds before you see anything, so once you hear it, keep watching the same spot.
Scan for wildlife from deck
Humpbacks and orcas in the water, brown bears on the shoreline, mountain goats on the cliffs above John Hopkins Inlet, and puffins and sea otters everywhere. Binoculars matter more here than anywhere else on the cruise.
Get the Junior Ranger badge
Rangers bring activity books aboard and swear children in on deck. It is free, it is genuine National Park Service kit, and adults are quietly jealous.
Dress and stay out
It is 5 to 10°C on deck with wind, and the temperature drops sharply near the ice. People who go inside to warm up miss the best of it — take a blanket from the cabin.
Weather by month
Best time to visit: May–Sep — ships only sail the bay in season
| Month | High | Low | Rain |
|---|---|---|---|
| Jan | 30° | 20° | 4.5" |
| Feb | 34° | 22° | 3.8" |
| Mar | 39° | 26° | 3.3" |
| Apr | 48° | 33° | 3.1" |
| May | 56° | 40° | 3" |
| Jun | 62° | 46° | 2.6" |
| Jul | 64° | 50° | 3.5" |
| Aug | 63° | 49° | 5.5" |
| Sep | 57° | 44° | 8.5" |
| Oct | 48° | 37° | 9.5" |
| Nov | 37° | 28° | 6.5" |
| Dec | 32° | 23° | 5.5" |
A little history
When George Vancouver sailed past in 1794 there was no bay — just a wall of ice five miles wide at the entrance. The glacier has retreated more than 65 miles since, the fastest documented glacial retreat anywhere, and the bay you sail up did not exist.
This is the homeland of the Huna Tlingit, who were driven out by the advancing ice several centuries ago and have returned; a tribal house opened at Bartlett Cove in 2016 and Tlingit cultural interpreters often sail with the rangers.
The park limits entry to two cruise ships per day in season. If your itinerary says Glacier Bay, that permit is a large part of what you paid for — many Alaska cruises visit Tracy Arm or Endicott Arm instead.
Margerie Glacier at the head of the bay is about a mile wide and 250 feet high at the face, and it is one of the few in the park still advancing.
Rangers board from a small boat at the park entrance around 6am and leave the same way in the evening. They set up a desk, run talks all day, and will answer anything.