Moon Phases December 2025
The full moon in December 2025 is the Cold Moon, on Thursday, 4 December 2025, 23:14 UTC. The new moon is on Saturday, 20 December 2025, 01:44 UTC. The Moon starts the month as a Waxing Gibbous (83% lit) and ends it as a Waxing Gibbous (88% lit).
Principal phases
Full Moon · Cold Moon
Thursday, 4 December 2025, 23:14 UTC
Last Quarter
Thursday, 11 December 2025, 20:52 UTC
New Moon
Saturday, 20 December 2025, 01:44 UTC
First Quarter
Saturday, 27 December 2025, 19:10 UTC
Daily moon calendar
Phase and illumination at 12:00 UTC each day.
MonTueWedThuFriSatSun
1Waxing Gibbous83%
2Waxing Gibbous91%
3Full Moon97%
4Full Moon100%
5Full Moon99%
6Full Moon96%
7Waning Gibbous91%
8Waning Gibbous83%
9Waning Gibbous74%
10Last Quarter64%
11Last Quarter54%
12Last Quarter44%
13Last Quarter34%
14Waning Crescent26%
15Waning Crescent18%
16Waning Crescent11%
17Waning Crescent6%
18New Moon2%
19New Moon1%
20New Moon0%
21New Moon2%
22Waxing Crescent6%
23Waxing Crescent11%
24Waxing Crescent18%
25Waxing Crescent27%
26First Quarter36%
27First Quarter47%
28First Quarter58%
29First Quarter69%
30Waxing Gibbous79%
31Waxing Gibbous88%