Best Time to Visit Glacier Bay National Park

Pick a month. Best months are in bold.

The best months to visit Glacier Bay National Park are April, May and June — computed from official NPS visitation (2021–2025 average), NOAA weather normals and daylight. July is the crowd peak (117,153 monthly visits); February is quietest at under 1% of peak.

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Best months for fewer crowds

The quietest months at Glacier Bay, leaving out harsh weather and months when main access is typically closed.

Monthly crowd curve

Average monthly recreation visits, 2021–2025 (NPS Visitor Use Statistics). Amber bar = current month.

Glacier Bay month by month

Crowds: NPS Visitor Use Statistics, mean of 2021–2025 (2020 excluded as a COVID-19 anomaly). Weather: NOAA 1991–2020 monthly normals, station ELFIN COVE, AK US (42 mi from park coordinates). Daylight: computed for the 15th of each month at the park's location. Methodology.

How many people visit Glacier Bay each year

Glacier Bay National Park had 740,044 recreation visits in 2025, 1% more than 2024 (NPS Visitor Use Statistics). The busiest year since 2015 was 2025, with 740,044. Over 2021–2025 it averaged 563,103 visits a year, which makes it the 26th least-visited of the 63 national parks.

Calendar-year recreation visits as published by NPS Visitor Use Statistics. 2020 is shown here but left out of the monthly averages above, because the COVID-19 pandemic makes it unrepresentative. See how every park compares: all 63 parks ranked by visits.

What to pack for Glacier Bay in April

Computed from April's weather normals — Glacier Bay's best month above. Visiting another month? Each month page has its own weather-computed list.

• Warm mid-layer (fleece or light puffy) — mornings average 35°F
• Rain shell + pack cover — 5.8″ of precipitation is normal this month
• Waterproof boots — plus navigation and a basic first-aid kit — 5.8″ of precipitation is normal this month
• Bear spray — recommended by the park in grizzly country (check current park regulations before you carry)

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Common questions

Glacier Bay month by month: notes from the park service

• January: January is Glacier Bay's quiet, cold off-season, and the park says to expect limited services in winter. Near sea level the maritime climate keeps it milder than you might think: winter nights average 25 to 40°F and rarely fall into single digits.
• February: February at Glacier Bay is still deep in the off-season. The park says roads around Gustavus are mostly flat but can be difficult and icy in winter, and water-based activities may be limited.
• March: March sees Glacier Bay's wildlife cycle start to turn. The park describes many species that disappear from the bay over winter and return or re-emerge in spring.
• April: April opens the driest stretch of Glacier Bay's year: the park says April, May and June are usually the driest months. That is relative, since Bartlett Cove gets about 70 inches of precipitation a year, so good rain gear still matters.
• May: May is when Glacier Bay's season begins. The park dates its main visitor season from late May through early September, and travel options from May through September include scheduled and charter flights, Alaska Marine Highway ferries, cruise ships, tour boats and charters.
• June: June 1 starts Glacier Bay's private-boat permit season. Through August 31, anyone bringing their own boat into park waters north of Point Gustavus and Point Carolus needs a free permit; the number per day is limited and permits can be reserved up to 60 days ahead.
• July: July is the peak of Glacier Bay's visitor season, the park says. Summer highs near sea level run between 50 and 60°F, and rangers lead programs in Bartlett Cove daily, including a guided walk on the Forest Loop Trail from the Glacier Bay Lodge.
• August: August is the last month of Glacier Bay's private-boat permit season, which runs to August 31. Most visitors see the park from the water, on anything from a large cruise ship to a single kayak, and the park counts 274 bird species seen here.
• September: September brings Glacier Bay's season to a close in early September, after which visitor services become very limited. The park says September and October tend to be the wettest months of the year.
• October: October is one of Glacier Bay's two wettest months, along with September, the park says, and the visitor season has ended. Above sea level, the rain turns to snow in the mountains.
• November: November at Glacier Bay is off-season, with limited services, cold short days and a maritime climate that keeps winter nights mostly between 25 and 40°F at sea level. To the northwest, Glacier Bay National Preserve is managed differently from the park, and hunting, trapping and commercial fishing are allowed there.
• December: December at Glacier Bay means brief days: the park notes that the long summer daylight becomes markedly short in winter. The park describes the bay as changing on every scale, with tides that rise and fall dramatically twice a day, often by about twenty vertical feet.

Each month page carries the full note and the NPS page it comes from.

Dive into a month

Comparing parks for the same trip? See how Glacier Bay ranks against all 63 parks in April, May and June.

Last verified 2026-09-24 · all parks