December Supermoon 2025: Skywatchers are set for a striking celestial moment this week as the final full moon of the
year, known as the Cold Moon, lights up the night sky. This December Cold Moon is a supermoon, shining brighter and
appearing larger because the moon travels close to its perigee.
Why December’s Full Moon Is Called the Cold Moon?
The name Cold Moon comes from the sharp drop in temperatures across the Northern Hemisphere as winter approaches. It is
also called the Moon Before Yule, marking the last full moon before Christmas and the closing lunar event of the year.
When to Watch the Cold Moon
The Cold Moon will rise on December 5, 2025. With the moon passing within 90 percent of its closest point to Earth, it
may appear up to 30 percent brighter than the year’s smallest full moon. This makes it one of the most visually
impressive supermoons of 2025.
A Rare Lunar Standstill Adds to the Spectacle
This full moon aligns with the end of the 18.6-year Major Lunar Standstill, a rare phase when the moon’s orbital tilt
reaches its peak. During this period, the moon rises farther north and climbs higher in the sky, creating dramatic and
Where to Watch the Cold Moon Live
Those unable to watch the supermoon outdoors can tune into global livestreams.
Virtual Telescope Project
The Virtual Telescope Project will broadcast live views from Manciano, Italy, on December 4 at 3 PM EST.
Griffith Observatory, Los Angeles
The Griffith Observatory will follow with its own livestream on December 5 at 8:27 PM EST, offering detailed telescopic
As the Cold Moon rises for the final time this year and in a rare formation not seen in nearly two decades - skywatchers
have a chance to witness a moment that blends beauty, science, and celestial mystery. Whether you watch it unfold in the
night sky or join a livestream from across the world, this supermoon marks a powerful close to 2025’s lunar calendar.
Don’t miss the chance to pause, look up, and experience one of the year’s most unforgettable sky events.