Friday Harbor is a town in San Juan County, Washington, United States.

Friday worked at the Pugets Sound Agricultural Company's Fort Cowlitz, from 1841 to 1859–60 and later moved north to San Juan Island, raising and herding sheep around the harbor.

[6] After the peaceful settlement obtained following the Pig War, the San Juan Islands became a separate county in 1873.

[8] Sailing ships, and later, the steamships of the Puget Sound Mosquito Fleet, visited the harbor on a regular basis hauling passengers, mail and freight.

Freight from the island would include apples, pears, cherries, strawberries, peas, cream, eggs, chickens, grain, salmon, and lime.

The Great Depression, World War II, the pea weevil, and competition from Eastern Washington growers brought about the decline of traditional island industries, diminishing Friday Harbor's export trade.

[10] Friday Harbor has a Mediterranean climate (Köppen Csb) with warm, dry summers and cold, though not severe, and rainy winters.

Friday Harbor was also the home base for the Sea Shepherd Conservation Society, where president and founder Paul Watson lived.

An international extension of the route to Sidney, British Columbia, ran seasonally from May to October until it was discontinued in March 2020 due to the COVID-19 pandemic and shutdown of cross-border traffic.

The Sidney ferry is not expected to resume until 2030 at the earliest due to low demand and a staff shortage.

[16][17] Seasonal passenger ferry service by private operators is available from Bellingham, Port Townsend, and Seattle to Friday Harbor.

[18] On San Juan Island, there are taxis, seasonal shuttles, bicycles, and mopeds for rent.

The San Juan Transit system connects Friday Harbor to other areas of the island, including tourist destinations, with year-round service.