Best Time to Cruise Alaska: Month-by-Month Guide

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Updated November 1, 2026

Glaciers and mountains along the Alaska coast — Photo: Commander John Bortniak, NOAA Corps, Public domain

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Quick answer: The Alaska cruise season runs from about May through September. June and July bring the longest days and generally warmer weather; May and September tend to be quieter and cheaper, with cooler, sometimes wetter weather. August is often rainier in Southeast Alaska.

There's no single best month; it depends on what matters to you.

Month by month

Month	Pros	Cons
May	Fewer crowds, often lower fares, snow on peaks	Cooler; some tours not running yet
June	Very long days, often drier	Popular, higher prices
July	Warmest on average, peak season	Busiest ports, highest prices
August	Wildlife, salmon runs	Often wetter
September	Fall colors, fewer crowds, possible northern lights late in the season	Cooler, wetter, shorter days

Weather reality

Southeast Alaska is a temperate rainforest; expect rain on some days in any month. Check NOAA forecasts before you go and pack layers.

Itineraries, policies and prices change. Confirm with your cruise line before you book.

Frequently asked questions

What is the cheapest month for an Alaska cruise?

Early and late season sailings in May and September are often less expensive.

Can you see the northern lights on an Alaska cruise?

It's possible late in the season when nights get darker, but not guaranteed.

Sources

NOAA National Weather Service: Juneau