- Jul 1 French frigate Medusa wrecked; basis of Géricault's painting "Raft of the Medusa"
Jul 2 French frigate "La Méduse" runs aground under incompetent leadership of Viscount of Chaumareys, 400 passengers evacuated. 150 men, 1 woman are left on "la Machine," a poorly provisioned raft. 13 days later only 15 survivors remain, inspires Théodore Géricault's painting "The Raft of the Medusa"
- Jul 8 Frost in Waltham, Massachusetts during "year without a summer"
- Jul 17 "L'Argus" accidentally discovers raft holding survivors from wrecked French frigate "Méduse." After 13 days at sea only 15 of 151 remain, the rest having been cannibalised, murdered, or committed suicide. This event was made famous by Théodore Gericault’s painting "The Raft of the Medusa"
- Jul 19 Survivors of French frigate Medusa rescued off Senegal after 17 days
- Jul 27 US troops destroy Fort Apalachicola, a Seminole fort, to punish Indians for harboring runaway slaves