Castle Rock (CO) 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 Castle Rock, Colorado, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

Those who love seasonal contrasts will appreciate Castle Rock. Expect long, bright days with 323 hours in July and darker periods with just 195 hours in November. The total annual amount of sun is 3102 hours.

Daily hours of sunshine

In Castle Rock, summer days are longer and more sunny, with daily sunshine hours peaking at 10.8 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 6.5 hours per day.

Average percent of sunshine

On average the sun shines 73% of the time during the day in September, the highest percentage of any month. May has the lowest percentage at 65%.

Castle Rock vs Major Cities: Sunshine Compared

Castle Rock enjoys an average of 3102 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.

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

In Chicago, USA, the annual sunshine averages 2520 hours, contributing to its humid continental climate.

In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.

Related Climate Data for Castle Rock

July, Castle Rock’s wettest month, receives 79 mm (3.1 in) of rainfall and has a maximum daytime temperature of 30°C (86°F). During the driest month January you can expect a temperature of 7°C (45°F).

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