Sunrise & Sunset Today in Boulder, United States 🇺🇸
Sun Phase: Daylight
Sunrise Today: 06:05 ↑ 67.7° ENE
Sunset Today: 20:07 ↑ 292.0° WNW
Day Length: 14h 02m
Sun Direction: W
Sun Altitude: 37.28°
Sun Distance: 151.699 million km
Next Equinox: Tuesday, September 22, 2026 (September Equinox)
When Is Sunrise & Sunset in Boulder?
August 2026 Sunrise & Sunset Times in Boulder
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| Day | Sunrise/Sunset | Daylight | Astronomical Twilight | Nautical Twilight | Civil Twilight | Solar Noon | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunrise | Sunset | Length | Diff. | Start | End | Start | End | Start | End | Time | Sun Dist. (Mil km) | |
| 1 |
05:59
↑
66° ENE
|
20:14
↑
294° WNW
|
14h 14m | -1m 58s | 04:10 | 22:02 | 04:51 | 21:22 | 05:28 | 20:45 | 13:07 | 151.83 |
| 2 |
06:00
↑
66° ENE
|
20:13
↑
294° WNW
|
14h 12m | -2m 00s | 04:12 | 22:01 | 04:52 | 21:20 | 05:30 | 20:43 | 13:07 | 151.81 |
| 3 |
06:01
↑
66° ENE
|
20:12
↑
294° WNW
|
14h 10m | -2m 01s | 04:13 | 21:59 | 04:54 | 21:19 | 05:31 | 20:42 | 13:07 | 151.79 |
| 4 |
06:02
↑
67° ENE
|
20:11
↑
293° WNW
|
14h 08m | -2m 03s | 04:15 | 21:58 | 04:55 | 21:18 | 05:32 | 20:41 | 13:07 | 151.77 |
| 5 |
06:03
↑
67° ENE
|
20:09
↑
293° WNW
|
14h 06m | -2m 05s | 04:16 | 21:56 | 04:56 | 21:16 | 05:33 | 20:40 | 13:07 | 151.75 |
| 6 |
06:04
↑
67° ENE
|
20:08
↑
292° WNW
|
14h 04m | -2m 06s | 04:18 | 21:54 | 04:57 | 21:15 | 05:34 | 20:39 | 13:07 | 151.73 |
| 7 |
06:05
↑
68° ENE
|
20:07
↑
292° WNW
|
14h 02m | -2m 08s | 04:19 | 21:53 | 04:58 | 21:13 | 05:35 | 20:37 | 13:06 | 151.71 |
| 8 |
06:06
↑
68° ENE
|
20:06
↑
292° WNW
|
13h 59m | -2m 09s | 04:20 | 21:51 | 05:00 | 21:12 | 05:36 | 20:36 | 13:06 | 151.69 |
| 9 |
06:07
↑
68° ENE
|
20:05
↑
291° WNW
|
13h 57m | -2m 11s | 04:22 | 21:49 | 05:01 | 21:10 | 05:37 | 20:35 | 13:06 | 151.67 |
| 10 |
06:08
↑
69° ENE
|
20:03
↑
291° WNW
|
13h 55m | -2m 12s | 04:23 | 21:47 | 05:02 | 21:09 | 05:38 | 20:33 | 13:06 | 151.64 |
| 11 |
06:09
↑
69° ENE
|
20:02
↑
290° WNW
|
13h 53m | -2m 13s | 04:25 | 21:46 | 05:03 | 21:07 | 05:39 | 20:32 | 13:06 | 151.62 |
| 12 |
06:10
↑
70° ENE
|
20:01
↑
290° WNW
|
13h 51m | -2m 14s | 04:26 | 21:44 | 05:04 | 21:06 | 05:40 | 20:31 | 13:06 | 151.60 |
| 13 |
06:11
↑
70° ENE
|
19:59
↑
290° WNW
|
13h 48m | -2m 16s | 04:28 | 21:42 | 05:06 | 21:04 | 05:41 | 20:29 | 13:06 | 151.57 |
| 14 |
06:12
↑
70° ENE
|
19:58
↑
289° WNW
|
13h 46m | -2m 17s | 04:29 | 21:40 | 05:07 | 21:03 | 05:42 | 20:28 | 13:05 | 151.54 |
| 15 |
06:13
↑
71° ENE
|
19:57
↑
289° WNW
|
13h 44m | -2m 18s | 04:30 | 21:39 | 05:08 | 21:01 | 05:43 | 20:26 | 13:05 | 151.52 |
| 16 |
06:14
↑
71° ENE
|
19:55
↑
288° WNW
|
13h 41m | -2m 19s | 04:32 | 21:37 | 05:09 | 21:00 | 05:44 | 20:25 | 13:05 | 151.49 |
| 17 |
06:15
↑
72° ENE
|
19:54
↑
288° WNW
|
13h 39m | -2m 20s | 04:33 | 21:35 | 05:10 | 20:58 | 05:45 | 20:23 | 13:05 | 151.46 |
| 18 |
06:15
↑
72° ENE
|
19:53
↑
288° WNW
|
13h 37m | -2m 21s | 04:35 | 21:33 | 05:12 | 20:56 | 05:46 | 20:22 | 13:05 | 151.43 |
| 19 |
06:16
↑
73° ENE
|
19:51
↑
287° WNW
|
13h 34m | -2m 22s | 04:36 | 21:31 | 05:13 | 20:55 | 05:47 | 20:20 | 13:04 | 151.40 |
| 20 |
06:17
↑
73° ENE
|
19:50
↑
287° WNW
|
13h 32m | -2m 23s | 04:37 | 21:29 | 05:14 | 20:53 | 05:48 | 20:19 | 13:04 | 151.37 |
| 21 |
06:18
↑
74° ENE
|
19:48
↑
286° WNW
|
13h 30m | -2m 24s | 04:39 | 21:28 | 05:15 | 20:51 | 05:49 | 20:17 | 13:04 | 151.34 |
| 22 |
06:19
↑
74° ENE
|
19:47
↑
286° WNW
|
13h 27m | -2m 24s | 04:40 | 21:26 | 05:16 | 20:50 | 05:50 | 20:16 | 13:04 | 151.31 |
| 23 |
06:20
↑
74° ENE
|
19:45
↑
285° WNW
|
13h 25m | -2m 25s | 04:41 | 21:24 | 05:17 | 20:48 | 05:51 | 20:14 | 13:03 | 151.28 |
| 24 |
06:21
↑
75° ENE
|
19:44
↑
285° WNW
|
13h 22m | -2m 26s | 04:43 | 21:22 | 05:18 | 20:46 | 05:52 | 20:13 | 13:03 | 151.24 |
| 25 |
06:22
↑
75° ENE
|
19:42
↑
284° WNW
|
13h 20m | -2m 27s | 04:44 | 21:20 | 05:20 | 20:45 | 05:53 | 20:11 | 13:03 | 151.21 |
| 26 |
06:23
↑
76° ENE
|
19:41
↑
284° WNW
|
13h 17m | -2m 27s | 04:45 | 21:18 | 05:21 | 20:43 | 05:54 | 20:10 | 13:03 | 151.18 |
| 27 |
06:24
↑
76° ENE
|
19:39
↑
284° WNW
|
13h 15m | -2m 28s | 04:47 | 21:16 | 05:22 | 20:41 | 05:55 | 20:08 | 13:02 | 151.15 |
| 28 |
06:25
↑
77° ENE
|
19:38
↑
283° WNW
|
13h 12m | -2m 29s | 04:48 | 21:15 | 05:23 | 20:40 | 05:56 | 20:06 | 13:02 | 151.11 |
| 29 |
06:26
↑
77° ENE
|
19:36
↑
282° WNW
|
13h 10m | -2m 29s | 04:49 | 21:13 | 05:24 | 20:38 | 05:57 | 20:05 | 13:02 | 151.08 |
| 30 |
06:27
↑
78° ENE
|
19:35
↑
282° WNW
|
13h 07m | -2m 30s | 04:50 | 21:11 | 05:25 | 20:36 | 05:58 | 20:03 | 13:01 | 151.04 |
| 31 |
06:28
↑
78° ENE
|
19:33
↑
282° WNW
|
13h 05m | -2m 30s | 04:52 | 21:09 | 05:26 | 20:34 | 05:59 | 20:01 | 13:01 | 151.01 |
|
All times are in local time for Boulder. Time is adjusted for Daylight Saving Time (DST) when applicable. Calculations account for atmospheric refraction and are based on the Gregorian calendar. Today's date is in the table. |
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In Boulder, the earliest sunrise of August is on August 01 and the latest sunset of August is on August 01.
2026 Sun Graph for Boulder
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Sun's Path on Selected Date in Boulder
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Is the Day Getting Longer or Shorter in Boulder?
Days in Boulder are currently getting shorter by about 2m 08s each day, roughly 15 minutes less daylight per week.
Golden Hour & Blue Hour in Boulder Today
| Morning | Evening | |
|---|---|---|
| Blue hour | 05:35-05:46 | 20:26-20:37 |
| Golden hour | 05:46-06:42 | 19:30-20:26 |
Boulder's Longest and Shortest Days
| Event | Date | Daylight |
|---|---|---|
| Longest day | June 22, 2026 | -9h 00m |
| Shortest day | December 21, 2026 | 9h 19m |
| Earliest sunrise | June 14, 2026 | 05:31 |
| Latest sunset | June 20, 2026 | 20:33 |
Understanding Twilight & the Golden Hour
After the sun drops below the horizon, the sky does not turn dark all at once. Civil twilight is the brightest stage, when there is still enough natural light for most outdoor activities. Nautical twilight follows, when the sea horizon becomes hard to make out. Astronomical twilight is the darkest stage, after which the sky is fully dark and the faintest stars appear. The same three stages occur in reverse before sunrise, as dawn.
Boulder sees its golden hour today around 05:46-06:42 and 19:30-20:26, framed by the blue hour at 05:35-05:46 and 20:26-20:37. As the sun's arc shifts with the seasons, these windows move with it.
Frequently Asked Questions about Sun in Boulder
What time is sunrise in Boulder today?
Today Boulder has sunrise at 06:05 local time.
What time is sunset in Boulder today?
The sun sets over Boulder today at 20:07 local time.
What time is solar noon in Boulder today?
Solar noon in Boulder — when the sun is at its highest point in the sky — is at 13:06 local time today.
When does civil twilight begin and end in Boulder?
In Boulder today: civil twilight begins at 05:35 (before sunrise) and ends at 20:37 (after sunset). Civil twilight is the brightest of the three twilight phases.
When does nautical twilight occur in Boulder?
Nautical twilight in Boulder today runs from 04:58 in the morning to 21:13 in the evening — the period when the horizon is still visible to sailors but stars are out.
When is the sky fully dark in Boulder for stargazing?
Astronomical twilight in Boulder ends at 21:53 in the evening and resumes at 04:19 in the morning — between those times the sky is fully dark, ideal for observing faint stars and deep-sky objects.
Where on the horizon does the sun rise and set in Boulder?
Today in Boulder, the sun rises at an azimuth of 68° and sets at 292° (measured clockwise from due north). The exact angle shifts slightly each day with the seasons.
