Jones Island

Jones Island Marine State Park

Availability

Each day shows how many of this campground’s sites are open.

About this spot

Among the most enchanting of the San Juan Islands, Jones Island Marine State Park is the place to let your heart and feet wander. Your wheels can wander too, as the paved trail through the park’s interior meets ADA standards. Accessible only by boat, the park is 188 acres with 25,000 feet of saltwater shoreline on the San Juan channel. The park provides mooring buoys on two coves, a dock, a Cascadia Marine Trail campsite and 24 first come first served primitive campsites. Drinking water is available May through September. The park has six composting toilets. There is no garbage service to the park. Visitors must pack-out what they pack-in.

Typical weather

Air temperature

Average daily high-low
Average daily high and low air temperature, January through DecemberEach vertical bar shows a monthly average daily high and low in degrees Fahrenheit.45°39°JJanuary: average high 45°F, average low 39°F44°38°FFebruary: average high 44°F, average low 38°F49°40°MMarch: average high 49°F, average low 40°F53°44°AApril: average high 53°F, average low 44°F60°49°MMay: average high 60°F, average low 49°F64°53°JJune: average high 64°F, average low 53°F68°56°JJuly: average high 68°F, average low 56°F69°57°AAugust: average high 69°F, average low 57°F63°54°SSeptember: average high 63°F, average low 54°F56°48°OOctober: average high 56°F, average low 48°F49°43°NNovember: average high 49°F, average low 43°F45°39°DDecember: average high 45°F, average low 39°F

5-year average · Open-Meteo

San Juan Channel

Average water temperature
Average water temperature for San Juan Channel, January through DecemberEach point shows the monthly average water temperature in degrees Fahrenheit.47°JJanuary: average water temperature 47°F46°FFebruary: average water temperature 46°F46°MMarch: average water temperature 46°F48°AApril: average water temperature 48°F49°MMay: average water temperature 49°F51°JJune: average water temperature 51°F53°JJuly: average water temperature 53°F53°AAugust: average water temperature 53°F53°SSeptember: average water temperature 53°F51°OOctober: average water temperature 51°F49°NNovember: average water temperature 49°F48°DDecember: average water temperature 48°F

Water: Friday Harbor (NOAA 9449880)

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