Grytviken (South Georgia) weather in September

September in Grytviken: cold, rainy, with clean air — a hit-or-miss time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Grytviken South Georgia and the South Sandwich Islands · Patagonia · Island47
  1. 65Jan
  2. 63Feb
  3. 52Mar
  4. 44Apr
  5. 36May
  6. 30Jun
  7. 32Jul
  8. 38Aug
  9. 47Sep
  10. 55Oct
  11. 61Nov
  12. 64Dec

#7 of 12 months in Grytviken · #1288 of 1413 destinations to visit in September · comfort 47/100 (tier F)

Days
5°C
Nights
-1°C
Wet days
18
Sun
7.2 h
Humidity
91%
Daylight
12 h
Grytviken, South Georgia and the South Sandwich Islands
Photo: nomis-simon · CC BY 2.0

Traveller notes on Grytviken in September

Other months in Grytviken

Nobody visits Grytviken in June - it's the dead of the sub-Antarctic winter and the expedition ships that call at South Georgia all run their season November through March. I couldn't find any traveler accounts of a June landing, but the station's own weather record explains why: highs hover right around freezing, it's dark by mid-afternoon with barely seven hours of daylight, and the wind off the water is relentless. Snow accumulates rather than melts this time of year. If you want to see the old whaling station and the elephant seals, plan for southern summer, not winter.
PolarExpeditioner · June · 1 month ago · Read more on Tripadvisor ↗
Trip reports specific to Grytviken are essentially nonexistent on the forum - this old whaling station is visited almost exclusively as a single stop on Antarctic expedition cruises, and posters on the Antarctic Adventures forum discuss South Georgia mainly in terms of ship itineraries and wildlife timing rather than shore-side weather. Posters who compare visit months do note that conditions can shift dramatically around different headlands and that snow chances are a real factor even heading into the austral summer. December sits in South Georgia's short summer season, but this remains a genuinely sub-Antarctic island: this note is grounded in that well-established regional climate pattern - persistently cold, damp, and snow-capable even at the warmest point of the year - rather than in destination-specific forum accounts, which simply don't exist in meaningful numbers for Grytviken.
Tripadvisor community · December · 1 month ago · Read more on Tripadvisor ↗

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Grytviken climate normals — September

Daytime high5°C / 40°F🧥 cold
Nighttime low-1°C / 29°F
Feels like (high)0°C / 32°F
Sea temperature0°C / 33°F🥶 cold sea
Rainfall119 mm / 4.7 in🌧 rainy
Rainy days18 days
Humidity91%💦 very humid
Dew point-2°C / 28°F
Sunshine7.2 h/day
Daylight11.7 h
Wind27 km/h / 17 mph
Snowfall66 cm / 26 in
Air quality (US AQI)30🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Grytviken in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Shoulder seasonschool holidays in 2 of the markets that fill it, an ordinary month(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Grytviken's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherGrytviken's weather peaks December–February, best around January.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Grytviken in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Rule

    Permits and biosecurity checks

    1 Jan – 31 DecBook early

    You cannot arrive independently: visits run under a government permit through an approved operator, boots and velcro are inspected for seeds before every landing, no food goes ashore, and set distances from wildlife are enforced. Source ↗

  • Season

    Winter shutdown

    1 Apr – 30 Sep · usuallyOff-season shutdownClosures

    Ships stop calling and the island is left to a handful of government staff, the museum team and the fisheries patrol. Nothing is open, nothing is scheduled, and there is no way for a visitor to get here.

  • Season

    Snow season

    Ski season

    About 66 cm of snow falls in the month.

    from the climate normals

What's on around the world in September →

Where is Grytviken?

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Grytviken in September — FAQ

Is September a good time to visit Grytviken?
September in Grytviken: cold, rainy, with clean air — a hit-or-miss time to visit. It ranks #7 of 12 months for Grytviken on SeasonMap's comfort score (47/100).
What is the weather like in Grytviken in September?
In September, Grytviken averages a daily high of 4.7°C and a low of -1.5°C, with about 118.8 mm of rain over roughly 17.9 rainy days.
What is the air quality in Grytviken in September?
Grytviken has a mean US Air Quality Index of about 30 in September.
Does it snow in Grytviken in September?
Grytviken sees roughly 66 cm of snowfall in September.