USFWS · Washington

San Juan Islands National Wildlife Refuge

The San Juan Islands National Wildlife Refuge is in the San Juan Islands of the Salish Sea, north of Puget Sound, in Washington. Created in 1976, it comprises 83 small, uninhabited islands, scattered throughout the San Juans, with a combined area of approximately 454 acres (1.84 km2). The refuge is managed by the U.S. Fish and Wildlife Service as one of six in the Washington Maritime National Wildlife Refuge Complex.

From Wikipedia, licensed CC BY-SA 4.0.

Official page at U.S. Fish and Wildlife Service ↗
DesignationNational Wildlife Refuge
Managed byU.S. Fish and Wildlife Service
StateWashington
Size394 acres (computed from the boundary polygon)
FWS regionRegion 1
Center point48.7462, -122.8361
Night skyAbout as dark as the ground gets (Black Marble reading 6)

Boundary map

33 outlines

Boundary, simplified to about 0.005 degrees

The outline is the agency boundary simplified for display, so small parcels and inholdings may not show. The agency page has the authoritative map.

Weather by month

NOAA climate normals →
Weather by month near San Juan Islands National Wildlife Refuge40°50°60°70°January: 3.95 inches of precipitation, 1.8 inches of snowFebruary: 2.60 inches of precipitation, 0.4 inches of snowMarch: 2.63 inches of precipitation, 0.1 inches of snowApril: 2.07 inches of precipitation, 0.0 inches of snowMay: 1.68 inches of precipitation, 0.0 inches of snowJune: 1.27 inches of precipitation, 0.0 inches of snowJuly: 0.71 inches of precipitation, 0.0 inches of snowAugust: 1.00 inches of precipitation, 0.0 inches of snowSeptember: 1.62 inches of precipitation, 0.0 inches of snowOctober: 3.24 inches of precipitation, 0.1 inches of snowNovember: 4.58 inches of precipitation, 0.6 inches of snowDecember: 3.83 inches of precipitation, 2.8 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 41.0°F averageFebruary: 42.5°F averageMarch: 45.5°F averageApril: 49.7°F averageMay: 54.5°F averageJune: 58.1°F averageJuly: 61.7°F averageAugust: 61.7°F averageSeptember: 58.2°F averageOctober: 51.6°F averageNovember: 45.0°F averageDecember: 40.6°F average0 in1 in2 in3 in4 in5 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Olga 2 SE, 9 miles from the center point at 80 feet, station USC00456096 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 29 inches a year. The dotted line is average snowfall, about 6 inches a year on the same inches scale.

Large units span more than one climate. The station stands in for the center point, and the outer parts of the boundary can be warmer or colder.

Explore

Nearby on the other atlases

National Register listings within 15 miles · 102 in all · Register Atlas

Landmarks are listed first, then by distance from the boundary.

Reference

Questions people ask

How big is San Juan Islands National Wildlife Refuge?

394 acres, measured from the published boundary polygon. The agency’s own figure can differ where the boundary includes water or inholdings.

Source: How acreage is computed

Who manages San Juan Islands National Wildlife Refuge?

The U.S. Fish and Wildlife Service.

Source: U.S. Fish and Wildlife Service

What state is San Juan Islands National Wildlife Refuge in?

Washington.

Source: How states are assigned

How do I get to San Juan Islands National Wildlife Refuge?

A point inside the boundary is at 48.746, -122.836. San Juan Island National Historical Park is 3 miles away. The official page carries directions and the office address.

Source: U.S. Fish and Wildlife Service

How dark is the night sky at San Juan Islands National Wildlife Refuge?

NASA’s Black Marble night-lights image reads 6 on a 0 to 255 scale at the center point, about as dark as the ground gets.

Source: NASA Black Marble

Which national parks are near San Juan Islands National Wildlife Refuge?

San Juan Island National Historical Park (3 mi) and Ebey's Landing National Historical Reserve (10 mi). Park Atlas has fees, hours and alerts for each.

Source: Nearby on the other atlases

Are there historic places near San Juan Islands National Wildlife Refuge?

102 National Register listings within 15 miles, including W. T. Preston (snagboat) and Fort Worden Building 305 (Historic Quartermasters Office & Storehouse).

Source: Register Atlas

Sources

  • Boundary, name: the U.S. Fish and Wildlife Service refuge boundary layer.
  • States: computed by intersecting the boundary with Census state polygons; a state is listed when it holds at least one percent of the area.
  • Acreage: geodesic area of the published polygon. The agency’s official acreage can differ where the boundary includes water, easements or inholdings.
  • Description: San Juan Islands National Wildlife Refuge on Wikipedia, CC BY-SA 4.0. The article was accepted because its title contains this unit’s name.
  • Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
  • Night sky: NASA Black Marble (VIIRS, 2016 composite) sampled at zoom 6 around the center point.
  • Weather, alerts, air quality, river flow and earthquakes load live in your browser from NWS, AirNow, USGS and iNaturalist when you open the page.