The Lake Chelan Pirate Fest and Carnival happens Memorial Day Weekend. However, Pirate Fest consists of Multiple Events on Different Days and Times throughout the Summer at a Variety of Locations throughout the Lake Chelan Valley. As the legend goes Pirates arrived in Lake Chelan in 1812 with their Magical Cargo. 200 years later the Pirate Gathering began with the First Annual Lake Chelan Pirate Fest in 2012. Now the Lake Chelan Pirates return every year. This event is fun and family friendly. More info: Lake Chelan Pirate Fest Official Website – Upcoming Festivals. For more things to do, check our big list of Memorial Day Weekend events.