Boise (ID) 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 Boise, Idaho, United States of America. Long-term data from 1990 to 2020 was used to calculate these averages.

Monthly hours of sunshine

If you're visiting Boise, timing is key. In July, you can enjoy up to 399 hours of sunshine, while the shorter days of December provide just 103 hours. The total annual amount of sun is 2983 hours.

Daily hours of sunshine

For those who appreciate different seasons, Boise serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 13.3 hours of sunshine daily, and embrace the darker days in December, offering only 3.4 hours of daily sunlight.

Average percent of sunshine

On average the sun shines 86% of the time during the day in July, the highest percentage of any month. January has the lowest percentage at 38%.

Boise vs Major Cities: Sunshine Compared

Boise enjoys an average of 2983 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

Athens, Greece, enjoys 2769 hours of sunshine each year, making it one of the sunniest destinations in the Mediterranean region.

Manchester, UK, experiences just around 1420 hours of sunshine annually.

Beijing, China, has 2505 hours of sunshine annually, with clear, sunny days in winter.

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

Related Climate Data for Boise

December, Boise’s wettest month, receives 8.4 mm (0.3 in) of snow/rainfall and has a maximum daytime temperature of 4°C (39°F). During the driest month August you can expect a temperature of 32°C (90°F).

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