Spinnaker Island

Also Known As: Hog Island, Park Island, Fort Duval Island, Hogg Island, and Little Hog Island.



Area of dry or relatively dry land surrounded by water or low wetland.
land Icon Land
Map Marker

GPS Coordinates

Latitude, Longitude:
42.3009326°, -70.8953239°
Elevation Icon


0 ft. (0 m.)

Topographic Map

US Topo Map

The USGS (U.S. Geological Survey) publishes a set of the most commonly used topographic maps of the U.S. called US Topo that are separated into rectangular quadrants that are printed at 22.75"x29" or larger. Spinnaker Island is covered by the Hull, MA US Topo Map quadrant

Free US Topo Map PDF Order Waterproof Printed Topo Map
Water Icon Water
Land Icon Land
Man-made Icon Man-made

Nearby Islands

Outer Seal Rock 0.7 mi
Inner Seal Rock 0.7 mi
Seal Rock 1.0 mi
Hunt Ledge 1.2 mi
Bumkin Island 1.4 mi

Nearby Points of Interest

Allerton Harbor Water 0.2 mi
Stony Beach Station (historical) Man-made 0.4 mi
Telegraph Hill Land 0.5 mi
Point Allerton Station (historical) Man-made 0.6 mi
Bay Side Station (historical) Man-made 0.7 mi

Historical Weather

Below are weather averages from 1971 to 2000 according to data gathered from the nearest official weather station. The nearest weather station for both precipitation and temperature measurements is HING which is approximately 5 miles away and has an elevation of 30 feet (30 feet higher than Spinnaker Island). Because the nearest station and this geographic feature may have differences in elevation and topography, the historic weather at the two separate locations may be different as well.

Average Daily Temperatures by Month (°F)

Average Monthly Precipitation (in inches)

Month Precip AVG High Temp AVG Low Temp
January 4.80" 36.8° 19.8°
February 4.01" 38.9° 22.0°
March 4.69" 46.6° 29.3°
April 4.26" 56.7° 37.6°
May 3.76" 67.4° 47.1°
June 3.47" 75.9° 56.3°
July 3.51" 81.4° 62.1°
August 4.17" 79.1° 60.9°
September 3.75" 71.8° 53.2°
October 4.41" 62.0° 42.4°
November 4.66" 51.8° 34.6°
December 4.39" 41.5° 25.4°

Summer High Temps

This location's average summer high temps are lower than 80% of other locations on record.

Winter Low Temps

This location's average winter low temps are higher than 52% of other locations on record.

Precipitation Levels

This location's average precipitation levels are higher than 82% of other locations on record.