Gustavus (AK) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Gustavus.
Climate overview of Gustavus
Gustavus, Alaska, United States of America, sees big temperature differences between seasons, with August peaking at 15°C (59°F) and January dropping to 2°C (36°F).
The city receives considerable rain/snowfall, with around 2884 mm (114 in) annually. October is the wettest month. Sunshine peaks in May, when the city sees around 7.7 hours of sunshine per day.
Gustavus Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Gustavus — and find the best time to visit.
Monthly Temperature in Gustavus
Visitors to Gustavus can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a moderate 15°C (59°F) in August to a very cold 2°C (36°F) in the coolest month, January.
Nights vary from 11°C (52°F) in August to around -2°C (28°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Gustavus
Gustavus is known for its substantial rain/snowfall, with annual precipitation reaching 2884 mm (114 in). The climate in Gustavus shows significant variation throughout the year. Expect heavy rainfall in October, the wettest month, with an average of 367 mm (14 in) of precipitation over 23 rainy days.
In contrast, the driest month June offers drier and sunnier days, with around 127 mm (5 in) of rainfall over 13 rainy days. For more details, please visit our Gustavus Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Gustavus
For those who appreciate different seasons, Gustavus serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 7.7 hours of sunshine daily, and embrace the darker days in December, offering only 1.4 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Gustavus by Month
The city experiences its highest humidity in September, reaching 87%. In April, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Gustavus
Frequently asked questions about the climate in Gustavus
What is the best time to visit Gustavus?
July typically offers the most optimal weather in Gustavus. In contrast, January, February, March, April, May, June, August, September, October, November and December tend to have less optimal conditions.
What temperatures can I expect in Gustavus?
Daytime highs range from 2°C (36°F) in January to 15°C (59°F) in August. Nighttime lows range from -2°C (28°F) to 11°C (52°F). Temperatures vary considerably through the year.
How much rain does Gustavus get?
Annual rainfall is around 2884 mm (114 in). October is the wettest month with 367 mm (14 in), while June is the driest with 127 mm (5 in).
How sunny is Gustavus?
Gustavus receives around 1,549 hours of sunshine per year. May is the sunniest month with 230 hours, while December is the cloudiest with just 43 hours.
Gustavus 3-Day Forecast
Gustavus (AK) 3-Day Forecast
Gustavus on the map
Gustavus is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.