Sunset & Sunrise Today in Boulder, Colorado
Sunrise & Sunset Tomorrow in Boulder: sunrise 5:46 AM, sunset 8:27 PM.
In Boulder, Colorado, the sun rises at 5:45 AM and sets at 8:28 PM today, Wednesday, July 15, 2026, for a total of 14h 43m of daylight. The sun reaches its high point above Boulder at 1:07 PM.
Sitting at 40.01° latitude puts Boulder in the mid-latitudes — daylight swings noticeably between the long days of summer and the short days of winter. Each day is currently getting about 1 minute shorter and 20 seconds. This is summer in Boulder, so the daily sun times are still on the move.
Golden hour in Boulder this evening is roughly 7:49 PM–8:48 PM, the best window for warm, soft photos. The blue hour follows, roughly 8:48 PM to 9:00 PM, as twilight deepens.
Tomorrow, sunset in Boulder is at 8:27 PM and sunrise at 5:46 AM — about 1m 22s less daylight than today. The table below shows how sunrise and sunset in Boulder drift across the whole year.
This is high summer in Boulder, the season of long evenings. Over the course of the year, sunset in Boulder ranges from as early as 4:35 PM (around December 2) to as late as 8:33 PM (around June 20). Its longest day lands on June 20 with 15h 00m of daylight, and its shortest on December 21 with just 9h 19m.
Moon in Boulder today
Sunset today: Boulder vs nearby cities
| City | Sunrise | Sunset | Day length |
|---|---|---|---|
| Boulder | 5:45 AM | 8:28 PM | 14h 43m |
| Longmont | 5:44 AM | 8:28 PM | 14h 44m |
| Westminster | 5:44 AM | 8:27 PM | 14h 42m |
| Arvada | 5:45 AM | 8:27 PM | 14h 42m |
| Thornton | 5:44 AM | 8:26 PM | 14h 42m |
Boulder sun facts for 2026
- Longest day June 20 — 15h 00m of daylight
- Shortest day December 21 — 9h 19m
- Latest sunset 8:33 PM (around June 20)
- Earliest sunset 4:35 PM (around December 2)
- Earliest sunrise 5:31 AM (around June 11)
- Latest sunrise 7:29 AM (around October 31)
Solstices & equinoxes in Boulder (2026)
| Event | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Mar 20, 2026 | 7:04 AM | 7:13 PM | 12h 08m |
| June solstice (longest day) | Jun 21, 2026 | 5:32 AM | 8:33 PM | 15h 00m |
| September equinox | Sep 22, 2026 | 6:49 AM | 6:57 PM | 12h 08m |
| December solstice (shortest day) | Dec 21, 2026 | 7:19 AM | 4:38 PM | 9h 19m |
Boulder sunrise & sunset — next 14 days
| Date | Sunrise | Sunset | Day length | Change |
|---|---|---|---|---|
| Wed Jul 15 | 5:45 AM | 8:28 PM | 14h 43m | — |
| Thu Jul 16 | 5:46 AM | 8:27 PM | 14h 41m | −1m 22s |
| Fri Jul 17 | 5:46 AM | 8:27 PM | 14h 40m | −1m 25s |
| Sat Jul 18 | 5:47 AM | 8:26 PM | 14h 39m | −1m 28s |
| Sun Jul 19 | 5:48 AM | 8:26 PM | 14h 37m | −1m 30s |
| Mon Jul 20 | 5:49 AM | 8:25 PM | 14h 36m | −1m 33s |
| Tue Jul 21 | 5:50 AM | 8:24 PM | 14h 34m | −1m 36s |
| Wed Jul 22 | 5:50 AM | 8:23 PM | 14h 32m | −1m 37s |
| Thu Jul 23 | 5:51 AM | 8:22 PM | 14h 31m | −1m 40s |
| Fri Jul 24 | 5:52 AM | 8:22 PM | 14h 29m | −1m 43s |
| Sat Jul 25 | 5:53 AM | 8:21 PM | 14h 27m | −1m 44s |
| Sun Jul 26 | 5:54 AM | 8:20 PM | 14h 25m | −1m 47s |
| Mon Jul 27 | 5:55 AM | 8:19 PM | 14h 24m | −1m 49s |
| Tue Jul 28 | 5:56 AM | 8:18 PM | 14h 22m | −1m 51s |
Twilight times in Boulder today
| Phase | Begins | Ends |
|---|---|---|
| Astronomical twilight | 3:47 AM | 10:25 PM |
| Nautical twilight | 4:33 AM | 9:40 PM |
| Civil twilight | 5:12 AM | 9:00 PM |
| Morning golden hour | 5:25 AM | 6:24 AM |
| Evening golden hour | 7:49 PM | 8:48 PM |
Civil, nautical and astronomical twilight describe how far the sun is below the horizon — useful for photographers, sailors and stargazers in Boulder.
Sunrise & sunset in Boulder by month
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 7:23 AM | 4:46 PM | 9h 23m |
| February | 7:09 AM | 5:20 PM | 10h 10m |
| March | 6:34 AM | 5:52 PM | 11h 18m |
| April | 6:45 AM | 7:25 PM | 12h 40m |
| May | 6:01 AM | 7:55 PM | 13h 54m |
| June | 5:34 AM | 8:23 PM | 14h 49m |
| July | 5:36 AM | 8:33 PM | 14h 57m |
| August | 5:59 AM | 8:14 PM | 14h 14m |
| September | 6:29 AM | 7:32 PM | 13h 02m |
| October | 6:57 AM | 6:42 PM | 11h 45m |
| November | 6:30 AM | 4:58 PM | 10h 27m |
| December | 7:04 AM | 4:36 PM | 9h 31m |
Times shown for the 1st of each month, local time in Boulder.
Sunset & sunrise FAQ for Boulder
What time is sunset in Boulder today?
Sunset in Boulder, Colorado is at 8:28 PM today. It shifts by a minute or two each day as the seasons change.
What time is sunrise in Boulder today?
Sunrise in Boulder is at 5:45 AM today, with 14h 43m of daylight to follow.
What time is sunrise in Boulder tomorrow?
Sunrise in Boulder tomorrow is at 5:46 AM, and sunset tomorrow is at 8:27 PM.
What time is sunset in Boulder tomorrow?
Sunset in Boulder tomorrow is at 8:27 PM.
How long is the day in Boulder today?
Boulder gets 14h 43m of daylight today, between sunrise at 5:45 AM and sunset at 8:28 PM.
When is golden hour in Boulder?
The evening golden hour in Boulder is about 7:49 PM to 8:48 PM today — the warm, soft light ideal for photos.
When is blue hour in Boulder?
The evening blue hour in Boulder runs from about 8:48 PM to 9:00 PM today, just after sunset.
What time does it get dark in Boulder?
After sunset at 8:28 PM, full darkness (the end of twilight) arrives in Boulder at around 9:00 PM today.
When is solar noon in Boulder?
Solar noon — when the sun is highest in the sky over Boulder — is at 1:07 PM today.
Sunset times in cities near Boulder
Sunrise & sunset times in more Colorado cities
Sunset card for Boulder
Learn more about sunset, sunrise & twilight
- 🌇 What is golden hour?Golden hour is the warm, soft light just after sunrise and before sunset. Learn what it is, when it happens, how long it lasts, and how to use it.
- 🌆 What is blue hour?Discover what blue hour is, when it happens, how it differs from golden hour, and expert tips for photographing the soft blue twilight. Check exact blue.
- 🌌 Twilight explained: civil, nautical & astronomicalLearn the three phases of twilight—civil, nautical, astronomical—and what they mean for photographers, stargazers, and sunset lovers.
- 🌅 Why are sunsets red and orange?Discover the science behind red and orange sunsets, from Rayleigh scattering to air quality. Learn when and where to see the most vivid colors.
- 📸 The best time to photograph a sunsetDiscover the best time to photograph a sunset, from golden hour to blue hour. Learn exact timing, camera settings, and composition tips for stunning shots.
- ☀️ What is solar noon?Solar noon is when the sun reaches its highest point. Learn why it rarely matches 12:00 PM and how to find your exact solar noon.
- 📈 Why days get longer and shorter through the yearEarth's axial tilt drives seasonal day-length changes. Learn how solstices, equinoxes, and latitude affect daylight where you live.
- 🌞 The summer solstice explainedWhat causes the summer solstice, when it happens, and how it affects sunset times. Discover the science and beauty of the year's longest day.