Full Moon December 2025: How to See the Rare Cold Supermoon and What It Means
The full moon peaks on December 4, 2025, at 23:14 UTC, marking the third and final supermoon of the year. Astronomers say it is the last "extreme" full moon until 2042, due to a major lunar standstill cycle. The Cold Moon will appear full from December 3–5 and will be about 221,800 miles from Earth, making it larger and brighter than usual.