Plum Island (New York)

Island Island with federal animal disease research facility

Off eastern Long Island, Plum Island is a narrow barrier island notable for the federal Plum Island Animal Disease Center. Access is restricted; people view it from boats or mainland points rather than by public beaches.

Main image

Plum Island is an island in Long Island Sound off the northeastern tip of Long Island, New York, notable as the site of a federal animal disease research facility established in 1954. The island covers roughly 840 acres (about 340 hectares) and is a visible feature from the Connecticut and Long Island coasts.

Public access to the island is restricted and it is not open for general tourism. From the mainland and authorized vessels people view sandy beaches, dune systems and seabird habitat along the shoreline; there are no regular public facilities on the island.

The U.S. government developed the research facility on the island in the mid-20th century to study exotic livestock diseases, including foot-and-mouth disease. Operational control and oversight have involved federal agricultural and homeland security agencies over time, and much of the island has been reserved for laboratory, support and restricted-use areas.

Geographically the island sits in eastern Long Island Sound north of the northeastern tip of Long Island (Suffolk County) and is visible from points on both Long Island and the Connecticut shoreline. Nearest mainland access for views and boat approaches is from the Orient Point area of Long Island and nearby Connecticut towns across the Sound.

  • Access: Public access to the island itself is restricted; view the island from authorized boat tours or vantage points on the Long Island shore.
  • Size: The island covers roughly 840 acres (about 340 hectares), making it one of the larger islands in eastern Long Island Sound.
  • Research facility: Home to a federal animal disease research facility since 1954, historically focused on diseases such as foot-and-mouth.

What to See #

  • Plum Island Animal Disease Center: Federal research facility established in 1954 to study exotic livestock diseases such as foot-and-mouth; legally restricted and separated from general-use areas of the island.
  • Beaches and coastal habitat: Sandy beaches, dunes and maritime habitat around the island that support seabirds and coastal vegetation; visible from nearby mainland viewing points and boat trips.
Plum Island (New York)
Plum Island, New York - off Long Island Sound (restricted areas on island)
41.1809, -72.1934
Access to the island and shoreline may be restricted due to government facilities; general viewing from mainland is free.

How to Get to Plum Island (New York) #

There is no public ferry to Plum Island. The island is visible from Orient Point, NY and from ferries and private boats operating in the eastern Long Island Sound; landing on the island is generally prohibited due to federal facilities.

Tips for Visiting Plum Island (New York) #

  • Plum Island is visible from Orient Point and nearby ferry routes-do not attempt to approach restricted areas near the federal research facility.
  • If the objective is wildlife or beaches, consider nearby Smith or Fishers Island which have visitor access.

Best Time to Visit Plum Island (New York) #

Plum Island has restricted access due to government facilities; viewing from shore or boat is the main option.

Late winter-spring
February-May · 0-12°C
Seal sightings in nearby waters can be good; access to the island itself is restricted.
Summer
June-August · 20-28°C
Pleasant weather for viewing from nearby coasts; do not land on restricted areas.

Weather & Climate near Plum Island (New York) #

Climate

Temperate climate with warm summers (peaking in August) and cold winters (coldest in January). Temperatures range from -4°C to 26°C. Abundant rainfall (1207 mm/year), wettest in November, distributed fairly evenly throughout the year.

Temperature & Rainfall
Temperature Range
27°
Warmest Month
-4°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 5°C and lows of -4°C. Significant rainfall (107 mm).

Comfort

Feels Like Cold
C
Temperature
-4°

Weather

107 mm
Rainfall
5.3 m/s
Wind
Light Breeze

February

February is cold with highs of 5°C and lows of -4°C. Regular rainfall (92 mm).

Comfort

Feels Like Cold
C
Temperature
-4°

Weather

92 mm
Rainfall
5.2 m/s
Wind
Light Breeze

March

March is cold with highs of 7°C and lows of -1°C. Significant rainfall (111 mm).

Comfort

Feels Like Cold
C
Temperature
-1°

Weather

111 mm
Rainfall
5.3 m/s
Wind
Light Breeze

April

April is cold with highs of 11°C and lows of 3°C. Significant rainfall (107 mm).

Comfort

Feels Like Cold
C
Temperature
11°

Weather

107 mm
Rainfall
5.0 m/s
Wind
Light Breeze

May

May is cool with highs of 17°C and lows of 8°C. Regular rainfall (96 mm).

Comfort

12°
Feels Like Cool
12°C
Temperature
17°

Weather

96 mm
Rainfall
4.4 m/s
Wind
Light Breeze

June

June is cool with highs of 23°C and lows of 13°C. Regular rainfall (90 mm).

Comfort

18°
Feels Like Cool
18°C
Temperature
13° 23°

Weather

90 mm
Rainfall
4.1 m/s
Wind
Light Breeze

July

July is mild with highs of 26°C and lows of 17°C. Regular rainfall (83 mm).

Comfort

22°
Feels Like Mild
22°C
Temperature
17° 27°

Weather

83 mm
Rainfall
3.7 m/s
Wind
Light Breeze

August

August is the warmest month with highs of 26°C and lows of 17°C. Significant rainfall (102 mm).

Comfort

22°
Feels Like Mild
22°C
Temperature
17° 26°

Weather

102 mm
Rainfall
3.7 m/s
Wind
Light Breeze

September

September is mild with highs of 23°C and lows of 14°C. Regular rainfall (97 mm).

Comfort

19°
Feels Like Mild
19°C
Temperature
14° 23°

Weather

97 mm
Rainfall
4.0 m/s
Wind
Light Breeze

October

October is cool with highs of 19°C and lows of 10°C. Regular rainfall (97 mm).

Comfort

14°
Feels Like Cool
14°C
Temperature
10° 19°

Weather

97 mm
Rainfall
4.5 m/s
Wind
Light Breeze

November

November is cold with highs of 14°C and lows of 5°C. The wettest month with heavy rain (115 mm).

Comfort

Feels Like Cold
C
Temperature
14°

Weather

115 mm
Rainfall
4.9 m/s
Wind
Light Breeze

December

December is cold with highs of 8°C and lows of 0°C. Significant rainfall (110 mm).

Comfort

Feels Like Cold
C
Temperature

Weather

110 mm
Rainfall
5.1 m/s
Wind
Light Breeze

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