La Ronde is closed today, Thursday, June 18, 2026, because of forecast weather in Montreal.
The closure affects the Six Flags amusement park on Ile Sainte-Helene. La Ronde also posted the closure notice on its homepage, telling guests the park would be closed June 18 because of expected weather conditions.
The official park-hours page did not list a same-day reopening time. Guests planning a visit should check La Ronde before traveling, since summer weather decisions can change quickly.
Sources: La Ronde homepage and La Ronde park hours.