Best time to visit · Alaska
Best Time to Visit Glacier Bay National Park
Tidewater glaciers calving into a bay full of humpback whales.
The best time to visit Glacier Bay National Park is June–August. It's busiest in June through August. Avoid October through March, when snow closes roads, trails or services.
Month by month
Glacier Bay by season
Winter Poor
Very few visitors. Most services are closed.
Spring Fair
May brings returning birds and the start of the cruise and tour season.
Summer Prime
Prime season for the day boat, cruise ships, kayaking and humpback whales.
Fall Fair
Early September is still good, and rainy. Services wind down by mid-September.
What to do
- Take the day boat tour from Bartlett Cove
- Watch Margerie Glacier calve
- Kayak among icebergs
- Look for humpback whales and sea otters
- Walk the forest trails at Bartlett Cove
Most visitors come by cruise ship. For a quieter experience, fly to Gustavus and stay at Bartlett Cove.
Good to know
Glacier Bay was covered by ice only about 250 years ago. The glaciers have retreated over 60 miles since then.
Before you go: No road access. Arrive by plane, ferry or cruise ship. Check current conditions on nps.gov.
Getting there
Closest major airport: Juneau (JNU), then a short flight to Gustavus.
Nearby national parks
Approximate driving distance. Check a map for exact routes.
Where to stay
Glacier Bay month-by-month ratings
Questions about visiting Glacier Bay
When is the best time to visit Glacier Bay National Park?
The best time to visit Glacier Bay National Park is June–August. It's busiest in June through August. Avoid October through March, when snow closes roads, trails or services.
What is the worst time to visit Glacier Bay National Park?
October through March are the weakest time, when snow closes roads, trails or services.
When is Glacier Bay National Park most crowded?
Crowds peak in June through August. June through August offer the best balance of good conditions and fewer people.
Is Glacier Bay National Park worth visiting in winter?
Very few visitors. Most services are closed.
Do you need a reservation for Glacier Bay National Park?
No road access. Arrive by plane, ferry or cruise ship. Always check the official NPS page for the current year's rules.
What is the closest airport to Glacier Bay National Park?
The most convenient airport is Juneau (JNU), then a short flight to Gustavus.
How many days do you need at Glacier Bay National Park?
Plan at least one full day, more if you want to hike or explore the backcountry.
More in Alaska · National parks in Alaska · Season calendar
Last reviewed October 4, 2026. Ratings are editorial. Rules and road openings change each year, so confirm on the official NPS site before you go.