How to View the Final Supermoon of the Year as December's Cold Moon Reaches its Peak This Week

The festive season is in full swing, but December is about to offer a spectacular celestial show! Amid holiday preparations and seasonal activities, Decembers full moon will transform into a supermoon on December 4, peaking in the curious sign of Gemini at 6:14 p.m. ET. Are you ready for a stunning lunar display?

A supermoon occurs when the Moon reaches its closest approach to Earth, making it appear slightly larger and more luminous than a regular full moon. This final full moon of the year, fully illuminated at 100%, is part of a trio of supermoons closing out 2025, according to the Farmers' Almanac.

Known as the Cold Moon, Decembers full moon has long been associated with the onset of winters chill and the extended nights before the solstice. For skywatchers, this is an ideal moment: expect a radiant, oversized moon set against crisp winter skies.

Why Decembers Full Moon is a Supermoon

NASA explains that a full moon earns the title of supermoon when it reaches its peak while at its closest orbital point to Earth, known as perigee. This proximity makes the Moon appear slightly larger and brighter than usual, especially striking during moonrise when it hovers near the horizon.

Although the size difference is subtle, the Cold Supermoon is particularly captivating thanks to winters clear air, long nights, and the moon illusion that amplifies its apparent size as it ascends above the skyline.

Tips for Viewing December's Supermoon

To fully enjoy the spectacle, step outside shortly after sunset on December 4 with an unobstructed view of the eastern horizon. Ideal spots include rooftops, beaches, open fields, or any dark-sky area. The moon reaches peak brightness at 6:14 p.m. EST, but the most enchanting sight is during moonrise, when the warm, glowing moon appears largest.

Give your eyes a few minutes to adjust, minimize exposure to bright lights to enhance contrast, and dress warmly. For photography enthusiasts, a tripod or steady surface is recommended, along with adjusting focus and lowering exposure to capture the Moons details without overexposing.

When is the Next Supermoon?

If you miss this December supermoon, the next chance will come relatively soon on Monday, January 13 at 5:27 p.m. ET. Known as the Wolf Moon, this full moon gets its name from the increased howling activity of wolves during winter, according to the Farmers' Almanac.

Author: Gavin Porter