Moon · December 2025
Moon calendar for Cardiff, Wales, United Kingdom: December 2025
Daily moon phases, illumination, moonrise and moonset in Cardiff, Wales, United Kingdom for December 2025. Full moon: December 4, 2025. All times are shown in the local time of Cardiff, Wales, United Kingdom.
Full moonThursday, December 4, 2025, 11:18 PM
New moonSaturday, December 20, 2025, 2:59 AM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Gibbous | 85% | 1:32 PM | 3:50 AM |
| 2 | Waxing Gibbous | 92% | 1:40 PM | 5:31 AM |
| 3 | Waxing Gibbous | 97% | 2:00 PM | 6:51 AM |
| 4 | Full Moon | 100% | 2:21 PM | 8:28 AM |
| 5 | Full Moon | 99% | 3:22 PM | 9:57 AM |
| 6 | Waning Gibbous | 96% | 4:15 PM | 11:04 AM |
| 7 | Waning Gibbous | 91% | 5:47 PM | 11:41 AM |
| 8 | Waning Gibbous | 84% | 7:27 PM | 12:13 PM |
| 9 | Waning Gibbous | 75% | 8:40 PM | 12:25 PM |
| 10 | Waning Gibbous | 65% | 10:15 PM | 12:32 PM |
| 11 | Last Quarter | 55% | 11:36 PM | 12:43 PM |
| 12 | Last Quarter | 44% | — | 1:06 PM |
| 13 | Waning Crescent | 35% | 12:37 AM | 1:24 PM |
| 14 | Waning Crescent | 26% | 2:02 AM | 1:32 PM |
| 15 | Waning Crescent | 18% | 3:21 AM | 1:38 PM |
| 16 | Waning Crescent | 11% | 4:22 AM | 1:51 PM |
| 17 | Waning Crescent | 6% | 5:37 AM | 2:17 PM |
| 18 | Waning Crescent | 2% | 6:34 AM | 2:34 PM |
| 19 | New Moon | 1% | 7:45 AM | 3:35 PM |
| 20 | New Moon | 0% | 8:30 AM | 4:22 PM |
| 21 | Waxing Crescent | 2% | 9:28 AM | 5:35 PM |
| 22 | Waxing Crescent | 5% | 9:51 AM | 6:34 PM |
| 23 | Waxing Crescent | 11% | 10:18 AM | 8:00 PM |
| 24 | Waxing Crescent | 18% | 10:28 AM | 9:29 PM |
| 25 | Waxing Crescent | 27% | 10:44 AM | 10:29 PM |
| 26 | Waxing Crescent | 37% | 11:14 AM | — |
| 27 | First Quarter | 49% | 11:28 AM | 12:02 AM |
| 28 | First Quarter | 60% | 11:35 AM | 1:33 AM |
| 29 | Waxing Gibbous | 71% | 11:43 AM | 2:48 AM |
| 30 | Waxing Gibbous | 81% | 12:04 PM | 4:25 AM |
| 31 | Waxing Gibbous | 89% | 12:21 PM | 6:05 AM |
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Frequently asked questions
When is the full moon in December 2025 in Cardiff, Wales, United Kingdom?
The full moon peaks on Thursday, December 4, 2025, 11:18 PM (local time).
When is the new moon in December 2025?
The new moon falls on Saturday, December 20, 2025, 2:59 AM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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