November's full moon — named for the season beavers finish their dams and lodges before the freeze. The lore, the look, and how to see it.
Short answer
The Beaver Moon is November's full moon. The name marks the time beavers retreat to their lodges, well stocked for winter — and the season trappers set their beaver traps before the waters froze. A late-autumn moon, it climbs high and bright again as winter nears.
When is the Beaver Moon?
November's full moon — the date shifts a little each year.See 2026 calendar
Why "Beaver"?
Two explanations are usually given: it was the time to set beaver traps before the swamps froze, to secure warm winter furs; and it was when beavers themselves were busy finishing dams and lodges for the cold months. It has also been called the Frost Moon and the Mourning Moon.
What it looks like
As winter approaches the full moon climbs higher again, recovering the high path it lost through summer. The November moon is often bright and high, set against the first frosts and the long, dark evenings of late autumn.
Frequently asked questions
Why is it called the Beaver Moon?
Either because it was the season to set beaver traps before the freeze, or because beavers are busy finishing their lodges and dams for winter — sources cite both.
Is the Beaver Moon ever a supermoon?
Yes, in some years November's full moon falls near perigee and qualifies as a supermoon, appearing slightly larger and brighter than average.