Nampa (ID) Sunshine Hours by Month

In climate discussions, the hours of sunlight reveal much about a location. This page shows the total number of hours of direct sunlight per month and the average hours per day in Nampa, Idaho, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

Sunshine in Nampa varies greatly throughout the year. The sunniest month, July, reaches an impressive 399 hours, while December, the darkest month, offers only 103 hours. The total annual amount of sun is 2983 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Nampa. While July receives considerable daily sunshine with up to 13.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.4 hours of sunlight per day.

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%.

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

The city of Rome, Italy, experiences 2470 hours of sunshine annually, adding to its charm as a year-round tourist destination.

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

In Seoul, South Korea, there are approximately 2133 hours of sunshine per year, mostly during spring and autumn.

In Tokyo, Japan, the average annual sunshine is 1930 hours, with sunny periods between rainy seasons.

December, Nampa’s wettest month, receives 7 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 Nampa Precipitation page.