Dean Island (Antarctica)

Island Uninhabited Antarctic island near the Amundsen Sea

Uninhabited Antarctic island visited by scientific teams and occasional expedition vessels for polar research and wildlife observation.

Main image
Dean Island (Antarctica)
-74.4167, -127.4167

How to Get to Dean Island (Antarctica) #

Access is by sea only. Dean Island is approached as part of Antarctic cruises or research voyages that operate in the high southern latitudes during the austral summer (November-March). Landings are rare and subject to weather and ice conditions; visit only with operators accredited under the Antarctic Treaty System.

Tips for Visiting Dean Island (Antarctica) #

  • There are no facilities - travel only with experienced Antarctic operators if visiting approach waters.
  • Best viewed from the deck of an expedition ship; binoculars are useful for identifying wildlife on shore.
  • If visiting part of a landing itinerary, follow Antarctic Treaty rules: no more than 100 people ashore at once and strict biosecurity.

Best Time to Visit Dean Island (Antarctica) #

The only practical time to visit is the Antarctic summer (austral summer), November through March.

Antarctic summer
November-March · -2 to +5°C (28-41°F)
Calmer seas and maximum daylight; wildlife such as seals and seabirds most active.

Weather & Climate near Dean Island (Antarctica) #

Climate

Dean Island (Antarctica)'s climate is classified as Ice Cap - Ice Cap climate with freezing summers (peaking in January) and freezing winters (coldest in August). Temperatures range from -25°C to -1°C. Moderate rainfall (681 mm/year) with a pronounced dry season.

Temperature & Rainfall
Temperature Range
-1°
Warmest Month
-25°
Coldest Month
Monthly Conditions

January

January is freezing with highs of -1°C and lows of -5°C. The driest month with just 7 mm and breezy conditions.

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-5° -1°

Weather

7 mm
Rainfall
9.6 m/s
Wind
Breezy

February

February is freezing with highs of -4°C and lows of -9°C. Moderate rainfall (33 mm) and windy conditions.

Comfort

-7°
Feels Like Freezing
-7°C
Temperature
-9° -4°

Weather

33 mm
Rainfall
11.1 m/s
Wind
Windy

March

March is freezing with highs of -9°C and lows of -14°C. Moderate rainfall (74 mm) and windy conditions.

Comfort

-12°
Feels Like Freezing
-12°C
Temperature
-14° -9°

Weather

74 mm
Rainfall
11.9 m/s
Wind
Windy

April

April is freezing with highs of -11°C and lows of -17°C. Regular rainfall (89 mm) and windy conditions.

Comfort

-14°
Feels Like Freezing
-14°C
Temperature
-17° -11°

Weather

89 mm
Rainfall
12.1 m/s
Wind
Windy

May

May is freezing with highs of -13°C and lows of -19°C. The wettest month with 95 mm of rain and windy conditions.

Comfort

-16°
Feels Like Freezing
-16°C
Temperature
-19° -13°

Weather

95 mm
Rainfall
12.5 m/s
Wind
Windy

June

June is freezing with highs of -15°C and lows of -22°C. Moderate rainfall (55 mm) and windy conditions.

Comfort

-19°
Feels Like Freezing
-19°C
Temperature
-22° -15°

Weather

55 mm
Rainfall
11.2 m/s
Wind
Windy

July

July is freezing with highs of -17°C and lows of -24°C. Moderate rainfall (75 mm) and windy conditions.

Comfort

-21°
Feels Like Freezing
-21°C
Temperature
-25° -17°

Weather

75 mm
Rainfall
11.4 m/s
Wind
Windy

August

August is the coldest month with highs of -18°C and lows of -25°C. Moderate rainfall (71 mm) and windy conditions.

Comfort

-22°
Feels Like Freezing
-22°C
Temperature
-25° -18°

Weather

71 mm
Rainfall
10.6 m/s
Wind
Windy

September

September is freezing with highs of -17°C and lows of -25°C. Moderate rainfall (71 mm) and windy conditions.

Comfort

-21°
Feels Like Freezing
-21°C
Temperature
-25° -17°

Weather

71 mm
Rainfall
11.0 m/s
Wind
Windy

October

October is freezing with highs of -13°C and lows of -19°C. Moderate rainfall (65 mm) and windy conditions.

Comfort

-16°
Feels Like Freezing
-16°C
Temperature
-19° -13°

Weather

65 mm
Rainfall
13.0 m/s
Wind
Windy

November

November is freezing with highs of -7°C and lows of -12°C. Moderate rainfall (31 mm) and windy conditions.

Comfort

-9°
Feels Like Freezing
-9°C
Temperature
-12° -7°

Weather

31 mm
Rainfall
10.9 m/s
Wind
Windy

December

December is freezing with highs of -1°C and lows of -6°C. Light rainfall and breezy conditions.

Comfort

-4°
Feels Like Freezing
-4°C
Temperature
-6° -1°

Weather

15 mm
Rainfall
9.8 m/s
Wind
Breezy

Nearby Attractions to Dean Island (Antarctica)