SkyAlmanac

Moon · December 2025

Moon calendar for Belfast, Northern Ireland, United Kingdom: December 2025

Daily moon phases, illumination, moonrise and moonset in Belfast, Northern Ireland, United Kingdom for December 2025. Full moon: December 4, 2025. All times are shown in the local time of Belfast, Northern Ireland, United Kingdom.

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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 4:12 AM
2 Waxing Gibbous 92% 1:37 PM 6:15 AM
3 Waxing Gibbous 97% 1:47 PM 7:37 AM
4 Full Moon 100% 2:08 PM 9:22 AM
5 Full Moon 99% 2:41 PM 10:44 AM
6 Waning Gibbous 96% 3:56 PM 11:53 AM
7 Waning Gibbous 91% 5:31 PM 12:26 PM
8 Waning Gibbous 84% 7:18 PM 1:51 PM
9 Waning Gibbous 75% 8:37 PM 12:51 PM
10 Waning Gibbous 65% 10:16 PM 1:07 PM
11 Last Quarter 55% 11:40 PM 1:19 PM
12 Last Quarter 44% — 1:27 PM
13 Waning Crescent 35% 12:59 AM 1:31 PM
14 Waning Crescent 26% 2:17 AM 1:35 PM
15 Waning Crescent 18% 3:36 AM 1:40 PM
16 Waning Crescent 11% 4:38 AM 1:50 PM
17 Waning Crescent 6% 6:04 AM 2:13 PM
18 Waning Crescent 2% 7:19 AM 2:33 PM
19 New Moon 1% 8:15 AM 3:28 PM
20 New Moon 0% 9:20 AM 4:14 PM
21 Waxing Crescent 2% 9:50 AM 5:30 PM
22 Waxing Crescent 5% 10:18 AM 6:32 PM
23 Waxing Crescent 11% 10:31 AM 8:01 PM
24 Waxing Crescent 18% 10:52 AM 9:32 PM
25 Waxing Crescent 27% 11:17 AM 10:53 PM
26 Waxing Crescent 37% 11:27 AM —
27 First Quarter 49% 11:32 AM 12:16 AM
28 First Quarter 60% 11:36 AM 1:43 AM
29 Waxing Gibbous 71% 11:41 AM 3:29 AM
30 Waxing Gibbous 81% 11:52 AM 4:57 AM
31 Waxing Gibbous 89% 12:10 PM 6:35 AM

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Frequently asked questions

When is the full moon in December 2025 in Belfast, Northern Ireland, 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

More for Belfast, Northern Ireland, United Kingdom

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