Moon · December 2025
Moon calendar for San Luis Obispo, California, United States: December 2025
Daily moon phases, illumination, moonrise and moonset in San Luis Obispo, California, United States for December 2025. Full moon: December 4, 2025. All times are shown in the local time of San Luis Obispo, California, 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% | 2:03 PM | 3:34 AM |
| 2 | Waxing Gibbous | 94% | 2:27 PM | 4:34 AM |
| 3 | Waxing Gibbous | 98% | 3:28 PM | 6:03 AM |
| 4 | Full Moon | 100% | 4:12 PM | 7:29 AM |
| 5 | Waning Gibbous | 99% | 5:17 PM | 8:24 AM |
| 6 | Waning Gibbous | 95% | 6:18 PM | 9:35 AM |
| 7 | Waning Gibbous | 89% | 7:34 PM | 10:21 AM |
| 8 | Waning Gibbous | 81% | 8:29 PM | 11:07 AM |
| 9 | Waning Gibbous | 72% | 9:46 PM | 11:35 AM |
| 10 | Waning Gibbous | 62% | 10:47 PM | 12:08 PM |
| 11 | Last Quarter | 51% | 11:55 PM | 12:23 PM |
| 12 | Last Quarter | 41% | — | 12:43 PM |
| 13 | Waning Crescent | 32% | 12:52 AM | 1:28 PM |
| 14 | Waning Crescent | 23% | 1:52 AM | 1:37 PM |
| 15 | Waning Crescent | 15% | 2:45 AM | 2:13 PM |
| 16 | Waning Crescent | 9% | 3:48 AM | 2:29 PM |
| 17 | Waning Crescent | 5% | 4:39 AM | 3:28 PM |
| 18 | Waning Crescent | 2% | 5:44 AM | 3:56 PM |
| 19 | New Moon | 0% | 6:32 AM | 4:36 PM |
| 20 | New Moon | 1% | 7:37 AM | 5:39 PM |
| 21 | Waxing Crescent | 3% | 8:22 AM | 6:31 PM |
| 22 | Waxing Crescent | 7% | 9:01 AM | 7:40 PM |
| 23 | Waxing Crescent | 13% | 9:38 AM | 8:40 PM |
| 24 | Waxing Crescent | 21% | 10:38 AM | 9:48 PM |
| 25 | Waxing Crescent | 30% | 10:28 AM | 11:00 PM |
| 26 | First Quarter | 41% | 11:09 AM | — |
| 27 | First Quarter | 52% | 11:36 AM | 12:10 AM |
| 28 | Waxing Gibbous | 64% | 11:59 AM | 1:27 AM |
| 29 | Waxing Gibbous | 74% | 12:26 PM | 2:23 AM |
| 30 | Waxing Gibbous | 84% | 1:19 PM | 3:39 AM |
| 31 | Waxing Gibbous | 91% | 1:55 PM | 4:56 AM |
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Frequently asked questions
When is the full moon in December 2025 in San Luis Obispo, California, 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
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