Glacier Bay National Park and Preserve (AK) Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Glacier Bay National Park and Preserve.

Climate overview of Glacier Bay National Park and Preserve

Glacier Bay National Park and Preserve, Alaska, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 10°C (50°F) in July, while winters cool to -3°C (27°F) in January.

With around 4303 mm (169 in) of annual rain/snowfall, Glacier Bay National Park and Preserve has a notably wet climate. The wettest month is October.

Glacier Bay National Park and Preserve Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Glacier Bay National Park and Preserve — and find the best time to visit.

Monthly Temperature in Glacier Bay National Park and Preserve

Depending on the time of the year, temperatures range from chilly to very cold in Glacier Bay National Park and Preserve. Average daytime temperatures reach a chilly 10°C (50°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -3°C (27°F).

At night, temperatures range from around 5°C (41°F) in July to -8°C (18°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Glacier Bay National Park and Preserve

Glacier Bay National Park and Preserve has a relatively rain/snowy climate with high precipitation levels, averaging 4303 mm (169 in) of rain/snowfall annually. Glacier Bay National Park and Preserve can be quite wet during October, receiving approximately 522 mm (21 in) of precipitation over 21 snowy/rainy days.

In contrast, during the driest month (June), you will experience much drier conditions, with 165 mm (6.5 in) of precipitation spread across 12 rainy days. For more details, please visit our Glacier Bay National Park and Preserve Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Best Time to Visit Glacier Bay National Park and Preserve

Glacier Bay National Park and Preserve experiences heavy rainfall throughout the year, with no distinct dry season. All months receive significant precipitation above 160 mm (6.3 in), making it a consistently wet climate. If we needed to point out one month as a best month to visit, it would be July, the driest month with 191 mm (7.5 in) of rainfall.

Pack waterproof clothing and plan some indoor activities, as rain is expected year-round. The consistent rainfall creates green landscapes, but requires preparation for wet conditions.

Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.

Frequently asked questions about the climate in Glacier Bay National Park and Preserve

What temperatures can I expect in Glacier Bay National Park and Preserve?

Daytime highs range from -3°C (27°F) in January to 10°C (50°F) in July. Nighttime lows range from -8°C (18°F) to 5°C (41°F). Temperatures vary considerably through the year.

How much rain does Glacier Bay National Park and Preserve get?

Annual rainfall is around 4303 mm (169 in). October is the wettest month with 522 mm (21 in), while June is the driest with 165 mm (6.5 in). In the coldest months, precipitation may fall as snow/rain.

Glacier Bay National Park and Preserve 3-Day Forecast

Glacier Bay National Park and Preserve (AK) 3-Day Forecast

Glacier Bay National Park and Preserve on the map

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Where to go in July — average daytime high across popular destinations.

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