What time is sunrise and sunset in Boulder?
Today and tomorrow's sunrise and sunset times in Boulder, Colorado. Plus a monthly calendar with dawn, dusk, solar noon, and day length.
Today
Sunrise
6:24 AM
79° EDawn 5:56 AM
Sunrise in Boulder will be at 6:24:25 AM MDT (in 3 hours).
Sunset
7:34 PM
281° WDusk 8:02 PM
Sunset in Boulder will be at 7:34:56 PM MDT (in 17 hours).
Now
6:24a7:34p
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Night now · First light at 4:49 AM
- Daylight
- 13h 10m
- Darkness
- 7h 53m
- Solar noon
- 1:00 PM
- Sun altitude
- 34.8° below
- Sun direction
- 38° NE
Tomorrow
Sunrise
6:25 AM
79° EDawn 5:57 AM
Sunrise in Boulder will be at 6:25:22 AM MDT (in 27 hours).
Sunset
7:33 PM
280° WDusk 8:00 PM
Sunset in Boulder will be at 7:33:18 PM MDT (in 40 hours).
Moon tonight
Phase, moonrise and moonset in Boulder
Last Quarter
45% illuminated
- Moonrise
- 11:54 PM
- Moonset
- 3:03 PM
Calendar
America/Denver · click a day to expand
| Date | Dawn | Sunrise | Solar noon | Sunset | Dusk | Length | |
|---|---|---|---|---|---|---|---|
| 1 Tue | 5:53 am | 6:21 am | 1:01 pm | 7:39 pm | 8:07 pm | 13:18:12 | |
| 2 Wed | 5:54 am | 6:22 am | 1:00 pm | 7:38 pm | 8:05 pm | 13:15:38 | |
| 3 Thu | 5:55 am | 6:23 am | 1:00 pm | 7:36 pm | 8:04 pm | 13:13:04 | |
| 4 Fri | 5:56 am | 6:24 am | 1:00 pm | 7:34 pm | 8:02 pm | 13:10:30 | |
Friday, September 4 13:10:30 of daylight·−2m 34s vs. yesterday·twilight 5:56 am – 8:02 pm Time 3:04 AM Altitude -34.8° Heading 38° NE Light Night 3:04 AM, Night, altitude -34.8 degrees | |||||||
| 5 Sat | 5:57 am | 6:25 am | 12:59 pm | 7:33 pm | 8:00 pm | 13:07:56 | |
| 6 Sun | 5:58 am | 6:26 am | 12:59 pm | 7:31 pm | 7:59 pm | 13:05:21 | |
| 7 Mon | 5:59 am | 6:27 am | 12:59 pm | 7:30 pm | 7:57 pm | 13:02:46 | |
| 8 Tue | 6:00 am | 6:28 am | 12:58 pm | 7:28 pm | 7:55 pm | 13:00:11 | |
| 9 Wed | 6:01 am | 6:29 am | 12:58 pm | 7:26 pm | 7:54 pm | 12:57:35 | |
| 10 Thu | 6:02 am | 6:30 am | 12:57 pm | 7:25 pm | 7:52 pm | 12:54:59 | |
| 11 Fri | 6:03 am | 6:31 am | 12:57 pm | 7:23 pm | 7:50 pm | 12:52:23 | |
| 12 Sat | 6:04 am | 6:32 am | 12:57 pm | 7:21 pm | 7:49 pm | 12:49:47 | |
| 13 Sun | 6:05 am | 6:32 am | 12:56 pm | 7:20 pm | 7:47 pm | 12:47:11 | |
| 14 Mon | 6:06 am | 6:33 am | 12:56 pm | 7:18 pm | 7:45 pm | 12:44:35 | |
| 15 Tue | 6:07 am | 6:34 am | 12:56 pm | 7:16 pm | 7:44 pm | 12:41:58 | |
| 16 Wed | 6:08 am | 6:35 am | 12:55 pm | 7:15 pm | 7:42 pm | 12:39:21 | |
| 17 Thu | 6:09 am | 6:36 am | 12:55 pm | 7:13 pm | 7:40 pm | 12:36:44 | |
| 18 Fri | 6:10 am | 6:37 am | 12:55 pm | 7:11 pm | 7:38 pm | 12:34:08 | |
| 19 Sat | 6:11 am | 6:38 am | 12:54 pm | 7:10 pm | 7:37 pm | 12:31:31 | |
| 20 Sun | 6:12 am | 6:39 am | 12:54 pm | 7:08 pm | 7:35 pm | 12:28:54 | |
| 21 Mon | 6:13 am | 6:40 am | 12:54 pm | 7:06 pm | 7:33 pm | 12:26:17 | |
| 22 Tue | 6:14 am | 6:41 am | 12:53 pm | 7:05 pm | 7:32 pm | 12:23:40 | |
| 23 Wed | 6:15 am | 6:42 am | 12:53 pm | 7:03 pm | 7:30 pm | 12:21:03 | |
| 24 Thu | 6:16 am | 6:43 am | 12:53 pm | 7:01 pm | 7:28 pm | 12:18:26 | |
| 25 Fri | 6:17 am | 6:44 am | 12:52 pm | 7:00 pm | 7:27 pm | 12:15:49 | |
| 26 Sat | 6:18 am | 6:45 am | 12:52 pm | 6:58 pm | 7:25 pm | 12:13:13 | |
| 27 Sun | 6:19 am | 6:46 am | 12:51 pm | 6:56 pm | 7:23 pm | 12:10:36 | |
| 28 Mon | 6:20 am | 6:47 am | 12:51 pm | 6:55 pm | 7:22 pm | 12:08:00 | |
| 29 Tue | 6:21 am | 6:48 am | 12:51 pm | 6:53 pm | 7:20 pm | 12:05:23 | |
| 30 Wed | 6:22 am | 6:49 am | 12:50 pm | 6:52 pm | 7:19 pm | 12:02:47 | |
FAQ
Frequently asked questions about sunrise and sunset in Boulder, United States
- What time does the sun rise in Boulder today?
- Sunrise in Boulder today (Friday, September 4, 2026) is at 6:24 AM. The sun comes up in the E.
- What time does the sun set in Boulder today?
- Sunset today is at 7:34 PM, after 13h 10m of daylight.
- When is the longest day in Boulder, United States?
- The longest day of 2026 in Boulder is Sunday, June 21, 2026, the summer solstice, with 15h 01m of daylight. In 2027 the summer solstice falls on June 21, 2027.
- When is the shortest day in Boulder, United States?
- The shortest day of 2026 in Boulder, Colorado is Monday, December 21, 2026, the winter solstice, with 9h 19m of daylight. In 2027 the winter solstice lands on December 21, 2027.
- How much more daylight does Boulder get in summer than in winter?
- Boulder gets 5h 41m more daylight on its longest day than on its shortest (15h 01m against 9h 19m). Averaged across the year, a day here has 12h 12m of daylight.
- When is the earliest sunrise in Boulder?
- The earliest sunrise of 2026 in Boulder is on Sunday, June 14, 2026, when the sun comes up at 5:32 AM.
- When is the latest sunset in Boulder?
- The latest sunset is on Saturday, June 27, 2026 at 8:35 PM.
- When is the earliest sunset in Boulder?
- The earliest sunset of the year is on Tuesday, December 8, 2026, with the sun down by 4:37 PM.
- When is the latest sunrise in Boulder?
- The latest sunrise is on Saturday, October 31, 2026 at 7:30 AM.
- Does Boulder observe daylight saving time?
- Yes. Boulder uses Mountain Time: clocks go forward on March 8, 2026, then back on November 1, 2026. Sunrise and sunset times jump by an hour on those dates.
Developers: get this data programmatically with the free JSON API.
GET https://api.sunrisesunset.io/json?lat=40.01499&lng=-105.27055