December 2025’s Dazzling Cold Moon – A Final Supermoon Lighting Up the Long Winter Night
The final full Moon of 2025, a supermoon known as the Cold Moon, peaks on December 4 at 23:15 UTC. It appears 7–8% larger and about 15% brighter than usual. The Moon rises near sunset and will be close to the Pleiades star cluster. Perigean spring tides will cause slightly higher tides than average.