San Juan Islands
Islands Pacific Northwest archipelago famed for orcas and scenery
An island chain off Washington State known for orca-watching, kayaking, bicycling and a compact ferry-town scene anchored at Friday Harbor.
The San Juan Islands are an archipelago in northwest Washington State between the US mainland and Vancouver Island, Canada. The group includes many islands of varying size and is a well-known destination for outdoor recreation and wildlife watching.
The islands offer whale watching, kayaking, cycling and hiking, with visitor services concentrated at ferry-linked towns such as Friday Harbor on San Juan Island. A small number of islands are inhabited year-round while many smaller islets are uninhabited and valued for wildlife habitat.
Indigenous Coast Salish peoples inhabited the islands for millennia before European exploration in the 18th and 19th centuries. The islands later figured in 19th-century territorial negotiations between the United States and Britain and developed as fishing, logging and later tourism centres.
The San Juan Islands lie in the northern part of Puget Sound and the Strait of Juan de Fuca off Washington State, accessible by Washington State Ferries from Anacortes and by private boats and small aircraft.
- Number of islands: The archipelago comprises around 170 named islands, reefs and rocks, with several dozen inhabited islands and smaller islets.
- Main activities and access: Popular activities include whale watching, kayaking and island-hopping by ferry; the main vehicle ferry link from the mainland departs from Anacortes, Washington.
What to See #
- San Juan Island: San Juan Island - site of the main ferry terminal at Friday Harbor and a range of tourist facilities and museums.
- Orcas Island: Orcas Island - known for Moran State Park and a more mountainous interior offering hiking and viewpoints.
- Lopez Island: Lopez Island - noted for low-relief landscape and a reputation for cycling and quieter, car-light roads.
How to Get to San Juan Islands #
The main access points are ferries from Anacortes, Washington (Washington State Ferries) and small regional flights to airports on San Juan Island (Friday Harbor), Orcas Island and Lopez Island. Private boats and charter services also serve the archipelago; plan ahead and book ferry reservations in the summer.
Tips for Visiting San Juan Islands #
- Reserve ferries or small aircraft flights well in advance in summer; popular islands like Orcas and San Juan can be booked out.
- Explore quieter islands like Lopez for bicycling and Otter for birding-each island has a distinct character.
- Bring change for private island ferries and local marine parks; some small attractions do not accept cards.
Best Time to Visit San Juan Islands #
Summer is best for weather and wildlife viewings, though spring and autumn offer quieter visits and good whale-watching windows.
Weather & Climate near San Juan Islands #
San Juan Islands's climate is classified as Warm-Summer Mediterranean - Warm-Summer Mediterranean climate with mild summers (peaking in August) and cold winters (coldest in January). Temperatures range from 2°C to 21°C. Moderate rainfall (659 mm/year).
January
January is the coolest month with highs of 7°C and lows of 2°C. Regular rainfall (95 mm).
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February
February is cold with highs of 9°C and lows of 2°C. Moderate rainfall (65 mm).
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March
March is cold with highs of 10°C and lows of 3°C. Moderate rainfall (53 mm).
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April
April is cold with highs of 13°C and lows of 5°C. Moderate rainfall (43 mm).
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May
May is cool with highs of 16°C and lows of 7°C. Moderate rainfall (38 mm).
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June
June is cool with highs of 18°C and lows of 9°C. Moderate rainfall (33 mm).
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July
July is cool with highs of 20°C and lows of 11°C. The driest month with just 21 mm.
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August
August is cool with highs of 21°C and lows of 11°C. Light rainfall.
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September
September is cool with highs of 19°C and lows of 9°C. Light rainfall.
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October
October is cool with highs of 14°C and lows of 6°C. Moderate rainfall (59 mm).
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November
November is cold with highs of 9°C and lows of 4°C. The wettest month with heavy rain (107 mm).
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December
December is cold with highs of 7°C and lows of 2°C. Regular rainfall (91 mm).