Today’s full moon (December 4, 2025) is commonly called the Cold Moon, and it is also classed as a supermoon.
Name and timing
The December full moon is traditionally known as the Cold Moon in many Anglo- American naming lists, reflecting the onset of winter weather. In 2025 the full phase occurs on 4 December in the late evening (around 11 p.m. UTC), which matches tonight’s full moon.
Extra details
This particular Cold Moon is also a supermoon, meaning the full phase happens when the Moon is near its closest point to Earth in its orbit, making it appear somewhat larger and brighter than average. Many full-moon calendars and phase calculators list it as the final named full moon of 2025.
