Alaska Climate

Temperature & Rainfall

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg High 22 26 33 44 55 62 65 63 55 40 28 22
Avg Low 9 12 17 28 39 47 52 49 41 58 16 10
Rainfall 0.7 0.8 0.6 0.5 0.7 1.0 1.9 2.7 2.6 1.9 1.0 1.1

Target Summer Travel

The word that best describes Alaska’s weather is unpredictable. Most travelers make the most of Alaska’s summer months, May through September, enjoying warmer temperatures, long days and accessible wildlife. Throughout the summer weather is variable ranging from warm sunny days in the 70s or 80s to chilly rainy days in the 50s and 60s.

Alaska by Month

Looking for more Alaska weather and information on wildlife? Read our Alaska by Month: When to Go & Why. This month-by-month guide has tips on everything from weather, wildlife, daylight and the benefits of each month.


Dress For Variable Weather

Temperate rainforest areas along the coast enjoy a cool maritime climate while interior temperatures can vary from warm and sunny to cool and wet. Always expect and be prepared for cold rainy weather, but bask in the sun wearing shorts and t-shirts when the sky clears as it usually does on each trip. Due to its northern latitude, Alaska offers endless summer days providing plenty of sunlight for activities and explorations.

Alaska Trips for Any Season

No matter what season you seek to travel in Alaska, AdventureSmith Explorations has an extensive, curated collection of Alaska small ship cruises and wilderness trips to choose from. Learn more about our Alaska trips, or go direct to our Trip Finder to search by location and your travel dates.