How Cold Does Antarctica Get? The Coldest Place on Earth

Antarctica is the coldest, driest, windiest, and highest continent. Its temperatures define the extremes of Earth's natural environment.

Average Temperatures

• Coastal Stations (Summer): −10°C to +5°C (14–41°F)
• Coastal Stations (Winter): −20°C to −30°C (−4 to −22°F)
• Interior / Plateau (Summer): −30°C to −40°C (−22 to −40°F)
• Interior / Plateau (Winter): −50°C to −65°C (−58 to −85°F)

Record Extremes

• Lowest Natural Temperature on Earth: −89.2°C (−128.6°F) — Vostok Station (Russia), July 21, 1983 (winter).
• Lowest Satellite-Measured Surface Temp: −93.2°C (−135.8°F) — East Antarctic Plateau ridge, August 2010 (NASA/USGS).
• Highest Temperature: +19.8°C (67.6°F) — Esperanza Base (Argentina), Antarctic Peninsula, January 30, 2020 (verified by WMO). Previous: +17.5°C (2015).

Why So Cold?

1. High Elevation: Average 2,500 m (8,200 ft); South Pole 2,835 m. Temperature drops ~6.5°C/km.
2. Polar Night: 6 months of darkness (no solar input) at pole.
3. Ice Albedo: Ice reflects 80–90% of incoming radiation.
4. Katabatic Winds: Gravity-driven cold air drainage from plateau to coast (up to 320 km/h / 200 mph) — accelerates heat loss.
5. Dry Air: Low humidity = low heat capacity; no greenhouse trapping.
6. Isolation: Circumpolar current & vortex block warm air/moisture transport.

Wind Chill

With 100 km/h winds at −50°C, wind chill = −75°C (−103°F). Exposed skin freezes in <1 minute.

Antarctica's cold is not just weather—it's a planetary heat sink that drives global climate.