How to view the last supermoon of the year on Thursday

The final supermoon of 2025, known as the Cold Moon, will grace the night sky on Thursday, December 4. A supermoon happens when the full moon aligns with the point in its orbit closest to Earth, making it appear slightly larger and brighter than usual.

This Thursdays supermoon, the third one of the year, will rise in Boston at 3:34 p.m. and reach its fullest brightness at 6:14 p.m. The National Weather Service predicts mostly clear skies, offering ideal conditions for moon watchers.

The previous supermoon occurred on November 4 and was the largest of 2025. Sky enthusiasts can look forward to the next supermoon on January 3, 2026.

Author’s Analysis: The Cold Moon Supermoon

The upcoming Cold Moon supermoon on December 4, 2025, marks the final supermoon of the year. Its proximity to Earth will make it appear noticeably larger and brighter than a typical full moon.

In Boston, the moon will rise at 3:34 p.m. and reach peak brightness at 6:14 p.m. With mostly clear skies predicted by the National Weather Service, conditions are ideal for observation. This event follows the previous supermoon on November 4, which was the largest of the year.

For enthusiasts tracking lunar events, the next opportunity will be the supermoon on January 3, 2026, continuing the pattern of prominent full moons visible to the naked eye.

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• How to see the final supermoon of the year Thursday