Moon · December 2025
Moon calendar for Seattle, Washington, United States: December 2025
Daily moon phases, illumination, moonrise and moonset in Seattle, Washington, United States for December 2025. Full moon: December 4, 2025. All times are shown in the local time of Seattle, Washington, United States.
Full moonThursday, December 4, 2025, 3:18 PM
New moonFriday, December 19, 2025, 6:59 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Gibbous | 87% | 1:39 PM | 4:07 AM |
| 2 | Waxing Gibbous | 94% | 2:02 PM | 5:36 AM |
| 3 | Waxing Gibbous | 98% | 2:23 PM | 7:00 AM |
| 4 | Full Moon | 100% | 3:18 PM | 8:24 AM |
| 5 | Waning Gibbous | 99% | 4:08 PM | 9:40 AM |
| 6 | Waning Gibbous | 95% | 5:24 PM | 10:45 AM |
| 7 | Waning Gibbous | 89% | 6:30 PM | 11:34 AM |
| 8 | Waning Gibbous | 81% | 8:09 PM | 11:50 AM |
| 9 | Waning Gibbous | 72% | 9:34 PM | 12:17 PM |
| 10 | Waning Gibbous | 62% | 10:33 PM | 12:26 PM |
| 11 | Last Quarter | 51% | 11:56 PM | 12:37 PM |
| 12 | Last Quarter | 41% | — | 1:04 PM |
| 13 | Waning Crescent | 32% | 1:19 AM | 1:27 PM |
| 14 | Waning Crescent | 23% | 2:19 AM | 1:35 PM |
| 15 | Waning Crescent | 15% | 3:32 AM | 1:59 PM |
| 16 | Waning Crescent | 9% | 4:25 AM | 2:15 PM |
| 17 | Waning Crescent | 5% | 5:38 AM | 2:31 PM |
| 18 | Waning Crescent | 2% | 6:31 AM | 3:28 PM |
| 19 | New Moon | 0% | 7:40 AM | 4:07 PM |
| 20 | New Moon | 1% | 8:24 AM | 5:04 PM |
| 21 | Waxing Crescent | 3% | 9:09 AM | 6:10 PM |
| 22 | Waxing Crescent | 7% | 9:42 AM | 7:29 PM |
| 23 | Waxing Crescent | 13% | 10:13 AM | 8:25 PM |
| 24 | Waxing Crescent | 21% | 10:25 AM | 9:44 PM |
| 25 | Waxing Crescent | 30% | 10:40 AM | 11:09 PM |
| 26 | First Quarter | 41% | 11:21 AM | — |
| 27 | First Quarter | 52% | 11:33 AM | 12:21 AM |
| 28 | Waxing Gibbous | 64% | 11:41 AM | 1:40 AM |
| 29 | Waxing Gibbous | 74% | 12:05 PM | 3:15 AM |
| 30 | Waxing Gibbous | 84% | 12:23 PM | 4:28 AM |
| 31 | Waxing Gibbous | 91% | 1:08 PM | 6:05 AM |
Another city or date
Frequently asked questions
When is the full moon in December 2025 in Seattle, Washington, United States?
The full moon peaks on Thursday, December 4, 2025, 3:18 PM (local time).
When is the new moon in December 2025?
The new moon falls on Friday, December 19, 2025, 6:59 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
More for Seattle, Washington, United States
Near Seattle
- Bellevue, Washington, United States
- Renton, Washington, United States
- Kent, Washington, United States
- Tacoma, Washington, United States
- Everett, Washington, United States
- Olympia, Washington, United States
- Victoria, British Columbia, Canada
- Bellingham, Washington, United States
- Abbotsford, British Columbia, Canada
- Chilliwack, British Columbia, Canada
- Yakima, Washington, United States
- Surrey, British Columbia, Canada