Gustavus (AK) Sunshine Hours by Month

Sunshine is key to understanding how a place experiences its seasons. This page shows the total number of hours of direct sunlight per month and the average hours per day in Gustavus, Alaska, United States of America. The figures are based on a 30-year period (1990–2020) to provide a reliable average.

Monthly hours of sunshine

Sunshine in Gustavus varies greatly throughout the year. The sunniest month, May, reaches an impressive 230 hours, while December, the darkest month, offers only 43 hours. The total annual amount of sun is 1549 hours.

Daily hours of sunshine

This means the city can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 7.7 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.4 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 44% of the time during the day in May, the highest percentage of any month. December has the lowest percentage at 20%.

Gustavus enjoys an average of 1549 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Lisbon, Portugal, there are approximately 2801 hours of sunshine annually, highlighting its warm and sunny Mediterranean climate.

In contrast, London, UK, receives only about 1659 hours of sunshine per year, known for its frequently overcast and rainy skies.

The climate in San Francisco, USA, includes 3072 hours of sunshine annually, thanks to its mild coastal weather.

Melbourne, Australia, has 2380 hours of sunshine annually, with its famous “four seasons in a day” weather pattern.

October, Gustavus’s wettest month, receives 266 mm (10 in) of rainfall and has a maximum daytime temperature of 8°C (46°F). During the driest month June you can expect a temperature of 13°C (55°F).

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Gustavus Precipitation page.