South Georgia & South Sandwich weather in September 2025

Expect 2°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in South Georgia & South Sandwich in September. Check more long-term weather averages for South Georgia & South Sandwich in September before you book your next holiday to South Georgia & South Sandwich in 2025/2026.

  • 2°C maximum daytime temperature in September in South Georgia & South Sandwich (Grytviken)2
    2°C max day temperature
  • 2 hours of sunshine per day
  • 18 days with some rainfall in September in South Georgia & South Sandwich (Grytviken)18
    18 days with some rainfall
  • -4°C minimum night-time temperature in September in South Georgia & South Sandwich (Grytviken)-4
    -4°C min night temperature
  • 12 hours of daylight per day in September in South Georgia & South Sandwich (Grytviken)12
    12 hours of daylight per day
  • No heat & humidity in September in South Georgia & South Sandwich (Grytviken)0
    No heat & humidity
  • 138 mm monthly rainfall in September in South Georgia & South Sandwich (Grytviken)138
    138 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in September in South Georgia & South Sandwich (Grytviken)2
    2 (Low) UV index
  • 0°C sea temperature in September in South Georgia & South Sandwich (Grytviken)0
    0°C sea temperature

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The September weather guide for South Georgia & South Sandwich, represented by Grytviken, (Grytviken) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How cold is it in the South Georgia & South Sandwich in September?

Daytime temperatures usually reach 2°C in Grytviken, South Georgia & South Sandwich in September, falling to -4°C at night.

How sunny is it in the South Georgia & South Sandwich in September?

There are normally 2 hours of bright sunshine each day in Grytviken, South Georgia & South Sandwich in September - that's 16% of daylight hours.

Is the sea cold around the South Georgia & South Sandwich in September?

The average sea temperature around Grytviken, South Georgia & South Sandwich in September is 0°C.

Does it rain in the South Georgia & South Sandwich in September?

There are usually 18 days with some rain in Grytviken, South Georgia & South Sandwich in September and the average monthly rainfall is 138mm. Rain may fall as snow in this month.

South Georgia & South Sandwich September sunrise & sunset times

Browse the sunrise and sunset times for South Georgia & South Sandwich in September 2025. Select a month to view South Georgia & South Sandwich sunrise and sunset times for the next 12 months. The South Georgia & South Sandwich sunrise and sunset times shown below are for Grytviken.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 07:06 17:47
Monday, 15th September 2025 06:31 18:12
Tuesday, 30th September 2025 05:54 18:39

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