Full Moon in December 2025: A Rare Celestial Event to Mark Your Calendar

full moon december 2025

December 2025 will host a full Moon that lights the longest nights of the year, giving skywatchers a bright bookmark on a season of long shadows. The Moon reaches fullness as the Sun sits low on the horizon, and that pairing can make for especially dramatic evenings. This full Moon is often called the Cold Moon by tradition, a nod to winter’s bite and the hush that settles when days shorten.

Why it feels special: it occurs during the heart of the northern winter, close to the solstice, which puts extra emphasis on the Moon’s glow against a dark sky. If it also happens to be near perigee—the closest point to Earth in its orbit—the Moon can look unusually large and bright, earning the informal label of a supermoon. Even without that proximity, a December full Moon tends to cast clear, crisp radiance over bare trees and quiet landscapes.

How to watch: plan for a clear, dark night and give yourself time after sunset. The Moon typically rises in the east as the Sun sinks, climbs high through the night, and lingers in the sky against a backdrop of winter stars. Let your eyes adjust and enjoy the soft, steady light that turns winter scenes into something almost cinematic. If you’re with a camera, treat the Moon as a subject in low light—tripod, longer exposure, and scale the frame with a telephoto lens to capture its texture.

A blend of science and folklore, this December Moon reminds us of the Moon’s steady pull on our calendars and our imaginations. It’s worth marking on your calendar, stepping outside, and letting the glow carry you through a season of longer nights.

Full Moon in December 2025: A Rare Celestial Event to Mark Your Calendar

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