Grant Island
Island Remote Antarctic island in the Amundsen Sea
Grant Island lies off Antarctica’s coast and is visited mainly by scientists and the occasional expedition cruise; expect raw, offshore scenery and strict access under Antarctic treaties.
Grant Island is a small island in the Antarctic region, located at approximately 74.4667 degrees south latitude and 131.5833 degrees west longitude. It is an uninhabited, remote Antarctic feature.
Like many Antarctic islands, Grant Island has been charted during 20th-century exploration and survey work; it does not have a history of settlement or sustained human use.
Grant Island lies off the Antarctic coastline in the Southern Ocean, within the broad area of West Antarctica and subject to the Antarctic Treaty System.
- Status: Uninhabited and ice-covered, it lies off the Antarctic coast and is subject to the environmental protections and research protocols that apply to the region.
Tips for Visiting Grant Island #
- Grant Island is remote and accessible only by Antarctic expedition ship; plan visits through an experienced operator and expect Zodiac transfers rather than self-arranged landings.
- All landings and close approaches are governed by Antarctic Treaty/IAATO rules-biosecurity procedures (boots, equipment checks) and strict wildlife disturbance limits are mandatory.
- Many operators do not permit landings at every island; be prepared that the best views may be from the ship or Zodiac and that landing permits are assessed case‑by‑case.
Best Time to Visit Grant Island #
Grant Island is only realistically visited in the austral summer (November-March) when sea ice retreats and ship access is possible.
Weather & Climate near Grant Island #
Grant Island'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 -26°C to -2°C. Moderate rainfall (637 mm/year) with a pronounced dry season.
January
January is freezing with highs of -2°C and lows of -6°C. The driest month with just 6 mm and windy conditions.
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February
February is freezing with highs of -5°C and lows of -10°C. Moderate rainfall (33 mm) and windy conditions.
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March
March is freezing with highs of -10°C and lows of -15°C. Moderate rainfall (67 mm) and windy conditions.
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April
April is freezing with highs of -12°C and lows of -18°C. Regular rainfall (83 mm) and windy conditions.
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May
May is freezing with highs of -13°C and lows of -20°C. The wettest month with 88 mm of rain and windy conditions.
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June
June is freezing with highs of -16°C and lows of -23°C. Moderate rainfall (50 mm) and windy conditions.
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July
July is freezing with highs of -18°C and lows of -25°C. Moderate rainfall (70 mm) and windy conditions.
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August
August is the coldest month with highs of -19°C and lows of -26°C. Moderate rainfall (70 mm) and windy conditions.
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September
September is freezing with highs of -18°C and lows of -25°C. Moderate rainfall (65 mm) and windy conditions.
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October
October is freezing with highs of -13°C and lows of -20°C. Moderate rainfall (58 mm) and windy conditions.
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November
November is freezing with highs of -8°C and lows of -13°C. Moderate rainfall (31 mm) and windy conditions.
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December
December is freezing with highs of -2°C and lows of -7°C. Light rainfall and windy conditions.
