Sunrise and sunset in Boulder: December , 2025
| Time of sunrise: | 07:18 | |
| Time of sunset: | 16:37 | |
| Time of moonrise: | 05:24 | |
| Time of moonset: | 14:36 | |
| Day length: | 9 h. 19 min. | |
Table below shows sunrise and sunset data for the next several days. You can pick any time interval to get more data.
Interval:
-
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| 07.12.2025 | 07:10 | 16:35 | 9 h. 25 min. |
| 08.12.2025 | 07:11 | 16:35 | 9 h. 24 min. |
| 09.12.2025 | 07:12 | 16:35 | 9 h. 23 min. |
| 10.12.2025 | 07:13 | 16:35 | 9 h. 22 min. |
| 11.12.2025 | 07:13 | 16:36 | 9 h. 23 min. |
| 12.12.2025 | 07:14 | 16:36 | 9 h. 22 min. |
| 13.12.2025 | 07:15 | 16:36 | 9 h. 21 min. |
| 14.12.2025 | 07:16 | 16:36 | 9 h. 20 min. |
| 15.12.2025 | 07:16 | 16:37 | 9 h. 21 min. |
| 16.12.2025 | 07:17 | 16:37 | 9 h. 20 min. |
| 17.12.2025 | 07:18 | 16:37 | 9 h. 19 min. |
| 18.12.2025 | 07:18 | 16:38 | 9 h. 20 min. |
| 19.12.2025 | 07:19 | 16:38 | 9 h. 19 min. |
| 20.12.2025 | 07:19 | 16:39 | 9 h. 20 min. |
| 21.12.2025 | 07:20 | 16:39 | 9 h. 19 min. |
| 22.12.2025 | 07:20 | 16:40 | 9 h. 20 min. |
| 23.12.2025 | 07:21 | 16:40 | 9 h. 19 min. |
| 24.12.2025 | 07:21 | 16:41 | 9 h. 20 min. |
| 25.12.2025 | 07:22 | 16:41 | 9 h. 19 min. |
| 26.12.2025 | 07:22 | 16:42 | 9 h. 20 min. |
| 27.12.2025 | 07:22 | 16:43 | 9 h. 21 min. |
Monthly day length in Boulder, hours
This chart show the number of hours when sun is above the horizon line.
Best time for vacation in Boulder
Boulder on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boulder
Local time: 07:45
December 17, wednesday
0900
46°F
N
9 mph
9 mph
1200
55°F
NE
4 mph
4 mph
1500
59°F
E
39 mph
39 mph
1800
50°F
E
31 mph
31 mph
2100
43°F
E
17 mph
17 mph
December 18, thursday
0000
34°F
E
11 mph
11 mph
0300
28°F
E
30 mph
30 mph
0600
25°F
SE
24 mph
24 mph
