The Final Supermoon of 2025 Is This Week. When to See the Cold Moon

Your last chance to see a supermoon in 2025 is approaching quickly. The full moon is scheduled to appear this week on Thursday, Dec. 4. And even if you don't make plans to go out and see it, you'll probably spot it anyway -- it'll be the brightest thing in the night sky.

December's Cold Moon is the third of four consecutive supermoons and the last one of 2025. Supermoons tend to come in packs of four thanks to how the moon orbits the Earth. The orbit is elliptical, meaning the moon is closer during some months and farther away in others. When it's close to Earth, it's referred to as perigee, and full moons during perigee are considered supermoons.