Glacier Bay National Park & Preserve

Covering 3.3 million acres of rugged mountains, dynamic glaciers, temperate rainforest, wild coastlines and deep sheltered fjords, Glacier Bay National Park and Preserve is known as Homeland to the Huna and Yakutat Lingít, and is a highlight of Alaska's Inside Passage. From sea to summit, Glacier Bay offers limitless opportunities for adventure and inspiration.

Weather & conditions

Summer temperatures average 50° to 60° F (10° to 15° C). Rain is the norm in lush southeast Alaska. It is best to be prepared to enjoy the park in any kind of weather, especially rain. Suggested clothing includes waterproof boots, rain gear, a hat, gloves, wool or pile layers or a warm coat. Good rain gear is essential here. April, May and June are usually the driest months of the year. September and October tend to be the wettest.

What this latitude gives you

From 58.8° north, anything above declination +31.2° is circumpolar here: it never sets, so it is available on every clear night of the year. Anything below declination -31.2° never clears the horizon at all.

At this latitude the sun does not drop 18 degrees below the horizon around the June solstice, so there is no astronomical darkness at midsummer at all. Plan deep-sky work for the months either side of it.

We do not hold a measured Bortle class for this site, so treat the sky as unknown until you have taken a reading of your own.