How to See Thursday’s Full Cold Moon Last Supermoon of 2025

As winter nights draw in and the first frost begins to grip the air, the sky prepares for a final show before the year ends. On Thursday 4 December 2025, the full Moon known as the Cold Moon will light up the night and this one is special. It’s also a supermoon, making it brighter and seemingly larger than a typical full Moon.

When to Look Up

In the UK, the Cold Moon will reach full illumination about 23:14 (GMT) on 4 December. The best time to enjoy it is just after sunset, when the Moon rises and appears largest near the horizon that’s when the classic “moon illusion” makes it especially dramatic.

Why It’s Called the Cold Moon

December’s full Moon carries the ancient name “Cold Moon.” In centuries past, that name echoed the chill of the season the cold, long nights of winter coming in. For many, it marks a pause: winter is here, and the year is turning toward its close.

What Makes This One a Supermoon

A supermoon happens when the full Moon coincides with the Moon’s closest approach to Earth. That brings it noticeably closer, making it appear up to 10–14% larger and 25–30% brighter than the smallest full Moon of the year. The 2025 Cold Moon is the third and final supermoon of the year a striking way to close out the lunar calendar.

Where and How to Watch It

You don’t need special equipment. The Cold Moon will be visible to the naked eye. But to get the full effect especially details on the lunar surface binoculars or a small telescope will enhance the view.
For the best experience:

• Find a dark spot away from city lights. A flat horizon helps you catch moonrise properly.
• Go outside just after sunset the Moonrise moment brings a dramatic view.
• Wrap up warm. It will be cold. A flask of tea or a warm drink makes the experience all the more pleasant.

What to Expect in the Sky

Expect a full, bright Moon rising in the east. It will climb higher than most full Moons this year because winter skies tilt toward the Moon at night. On clear nights, the brightness may cast strong shadows on the ground. It will stay full and brilliant for a night or two often observers say the night before and after a full Moon gives the most breathtaking views.

Why You Shouldn’t Miss It

The Cold Moon is not just beautiful. It is a reminder of cycles of seasons ending and beginning again. As the final full Moon of 2025 and the last supermoon of the year, it invites reflection, appreciation and simple wonder. With long nights ahead and the festive season around the corner, why not step outside and look up for a while?