Moon · December 2026
Moon calendar for Boston, Massachusetts, United States: December 2026
Daily moon phases, illumination, moonrise and moonset in Boston, Massachusetts, United States for December 2026. Full moon: December 23, 2026. All times are shown in the local time of Boston, Massachusetts, United States.
Full moonWednesday, December 23, 2026, 8:16 PM
New moonTuesday, December 8, 2026, 6:17 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Last Quarter | 46% | 11:55 PM | 12:29 PM |
| 2 | Waning Crescent | 35% | — | 1:07 PM |
| 3 | Waning Crescent | 25% | 1:12 AM | 1:32 PM |
| 4 | Waning Crescent | 17% | 2:20 AM | 1:42 PM |
| 5 | Waning Crescent | 10% | 3:33 AM | 2:16 PM |
| 6 | Waning Crescent | 5% | 4:26 AM | 2:31 PM |
| 7 | Waning Crescent | 2% | 5:38 AM | 3:29 PM |
| 8 | New Moon | 0% | 6:28 AM | 4:01 PM |
| 9 | New Moon | 1% | 7:36 AM | 4:37 PM |
| 10 | Waxing Crescent | 3% | 8:21 AM | 5:44 PM |
| 11 | Waxing Crescent | 7% | 9:03 AM | 6:37 PM |
| 12 | Waxing Crescent | 12% | 9:37 AM | 7:46 PM |
| 13 | Waxing Crescent | 19% | 10:05 AM | 8:44 PM |
| 14 | Waxing Crescent | 27% | 10:24 AM | 9:55 PM |
| 15 | Waxing Crescent | 36% | 10:36 AM | 11:07 PM |
| 16 | First Quarter | 46% | 11:16 AM | — |
| 17 | First Quarter | 57% | 11:35 AM | 12:12 AM |
| 18 | Waxing Gibbous | 67% | 11:47 AM | 1:29 AM |
| 19 | Waxing Gibbous | 77% | 12:19 PM | 2:24 AM |
| 20 | Waxing Gibbous | 85% | 12:32 PM | 3:42 AM |
| 21 | Waxing Gibbous | 92% | 1:30 PM | 5:07 AM |
| 22 | Waxing Gibbous | 97% | 2:15 PM | 6:20 AM |
| 23 | Full Moon | 100% | 3:32 PM | 7:36 AM |
| 24 | Full Moon | 99% | 4:21 PM | 8:24 AM |
| 25 | Waning Gibbous | 96% | 5:42 PM | 9:26 AM |
| 26 | Waning Gibbous | 91% | 7:15 PM | 9:39 AM |
| 27 | Waning Gibbous | 83% | 8:23 PM | 10:20 AM |
| 28 | Waning Gibbous | 73% | 9:39 PM | 10:31 AM |
| 29 | Waning Gibbous | 63% | 10:42 PM | 11:14 AM |
| 30 | Last Quarter | 52% | — | 11:33 AM |
| 31 | Last Quarter | 41% | 12:05 AM | 11:46 AM |
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Frequently asked questions
When is the full moon in December 2026 in Boston, Massachusetts, United States?
The full moon peaks on Wednesday, December 23, 2026, 8:16 PM (local time).
When is the new moon in December 2026?
The new moon falls on Tuesday, December 8, 2026, 6:17 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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