Today's Sunrise & Sunset in Boulder

Sunrise in Boulder today is at 06:39:30 AM (local time). Sunset will be at 05:02:11 PM, giving Boulder 10h 22min of daylight today. Civil twilight begins at 06:12:59 AM and ends at 05:28:43 PM. Plan your day with the UV index for Boulder or find the best light for photos during the golden hour in Boulder. Get a full year of light data with the printable Boulder Photography Planner 2026.

Boulder sits in the subtropical zone, experiencing moderate seasonal daylight changes with mild, sun-rich winters. On the longest day of the year (December 21), Boulder receives 14.1 hours of daylight, with sunrise at 04:47 AM and sunset at 06:56 PM. On the shortest day (June 21), this drops to 10.1 hours — a difference of 4.0 hours between summer and winter. The earliest sunrise of the year occurs around December 02 at 04:43, while the latest sunset falls around January 11 at 19:01. The evening golden hour in Boulder lasts about 53 minutes in summer and 52 minutes in winter — typical for this latitude.