The last supermoon of 2025 peaks on December 4 with a dramatic night-sky display.
Closing out the year, Earth’s night sky is once again set to deliver a spectacular show. The Cold Moon, the final supermoon of 2025, is expected to peak on December 4, offering skywatchers a chance to witness the biggest and brightest full moon of the year’s end.
The Final Supermoon of 2025
The Cold Moon appears as the closing supermoon of the year after two rare supermoons were observed earlier in 2025, including the brightest and largest one seen in November. NASA explains that a supermoon occurs when the full moon reaches its closest distance to Earth at a point in its orbit called perigee. Although “supermoon” is not an official astronomical term, it is commonly used when a full moon comes within at least 90 percent of perigee.
On Thursday, December 4, 2025, the Cold Moon will reach its peak around midnight. The moon will begin rising shortly after sunset, giving observers an early view of the event.
How to Get the Best View of the Cold Moon
Time Out recommends beginning your observation as soon as the moon rises along the eastern horizon. At this moment, a visual illusion makes the moon appear significantly larger than when it is higher in the sky. The silhouettes of trees, buildings, or landscape features can enhance the dramatic effect.
Heading to a darker area with minimal light pollution will provide the best viewing experience. The Cold Moon can be seen clearly without any equipment—just look up. Still, telescopes and binoculars can help reveal more detailed views of the moon’s surface.
Spiritual Meaning and Historical Notes
The Cold Moon is often called the “Long Night Moon,” referring to December’s long nights in the Northern Hemisphere. Spiritually, the phenomenon is viewed as a symbol of reflection, slowing down, and quiet personal growth.
Last year, the supermoon season concluded with the Beaver Moon in November 2024. That event was particularly special because the Pleiades star cluster appeared near the moon on two consecutive nights. The name “Beaver Moon” comes from the period when beavers actively reinforce their dams and gather food ahead of winter.
What to Expect in 2026
Once the Cold Moon closes the supermoon cycle of 2025, the first supermoon of 2026 will appear on January 3. Two additional supermoons will be visible later in the year on November 24 and December 23, continuing the chain of celestial spectacles.
Other December Sky Events
December 2025 brings more than just the supermoon. First, the planet Mercury will reach its greatest elongation on December 7. This is the best opportunity to see the planet that is usually hidden in the Sun’s glare. Observers should look one hour before sunrise when Mercury rises above the eastern horizon, followed soon by Venus.
Next, the Geminid meteor shower will peak from December 13 to 14. Known as one of the most productive annual meteor showers, the Geminids can produce up to 120 meteors per hour under ideal natural conditions.
The Cold Moon is not just the final supermoon of 2025—it is also a moment for reflection, stillness, and appreciation of the night sky’s natural beauty. For viewers in Indonesia and Singapore, this phenomenon offers a rare and breathtaking sight without any special equipment, enhanced by additional December sky events that make the month even more remarkable.
Sources: Kepri Days (2025) , Liputan 6 (2025)
Keywords: Cold Moon, Supermoon 2025, NASA Explanation, December Sky Events, Mercury Visibility, Geminid Meteor Shower
