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The December 2025 full moon, known as the cold moon, will be the final full moon of the year.

It will reach its peak illumination on Thursday, Dec. 4, at 6:14 p.m. ET.

This event is also the third and final supermoon of 2025, appearing larger and brighter than usual.

When the December 2025 full moon rises, we will experience the final full moon (and supermoon) of the year.

We've already seen some beautiful astronomical phenomena this year, from the northern lights to the Leonid meteor shower . Add the December full moon, the final supermoon of the year, next week to the list of unique astronomical events.

When is the December full moon? What makes it a supermoon? How did it get its name? Here's more on the December full moon.

When is the December 2025 full mo

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