July's full 'Buck Moon' rises this week — and signals a big lunar transition is on the way

July's full moon — also known as the Buck Moon, the Thunder Moon and the Hay Moon — will be at its fullest on the night of July 21. It's the last "regular" full moon before a parade of four consecutive "supermoons" light up the sky.

The silhouette of a bull elk stands in front of a large full moon
A bull elk silhouetted against a full moon rising in Yellowstone National Park (composite image).
(Image credit: Mark Miller Photos via Getty Images)

July's full moon, known as the Buck Moon, will be at its fullest Sunday (July 21) when seen from North America. The moon will also appear bright and full on Saturday and Monday.

Native American tribes named July's full moon the Buck Moon after the new antlers that emerge from a buck's forehead this time of the year, according to Time and Date. Other traditional names for July's full moon include the Thunder Moon and the Hay Moon. The Anishinaabeg people call it Miin Giizis, or Berry Moon, according to the Center for Native American Studies.

Jamie Carter
Live Science contributor

Jamie Carter is a Cardiff, U.K.-based freelance science journalist and a regular contributor to Live Science. He is the author of A Stargazing Program For Beginners and co-author of The Eclipse Effect, and leads international stargazing and eclipse-chasing tours. His work appears regularly in Space.com, Forbes, New Scientist, BBC Sky at Night, Sky & Telescope, and other major science and astronomy publications. He is also the editor of WhenIsTheNextEclipse.com.