Antarctica's Highest Recorded Wind Speed: 203 mph at Dumont d'Urville

The highest officially measured wind speed in Antarctica was recorded on July 1982 at the French research station Dumont d'Urville (Adélie Land coast):

Context

• Katabatic Winds: These gravity-driven winds accelerate down the steep ice sheet slopes toward the coast. Dumont d'Urville sits at the base of a 1,500 m (4,900 ft) escarpment—perfect for extreme katabatic acceleration.
• Winter Peaks: July is mid-winter; temperature inversions strengthen the drainage flow.
• Instrumentation: Measured by standard anemometer at 10 m height per WMO standards.

Other Notable Measurements

• Commonwealth Bay (Cape Denison): Mean annual wind ~50 mph; gusts regularly exceed 150 mph. Mawson's 1912–1913 expedition recorded sustained 100+ mph for weeks.
• McMurdo Station: Peak gust ~115 mph (185 km/h).
• Automatic Weather Stations (AWS): Remote AWS units on the polar plateau have recorded gusts >180 mph, but many are not WMO-certified due to siting/maintenance issues.

Global Comparison

The world record remains 408 km/h (253 mph) at Barrow Island, Australia (Cyclone Olivia, 1996). Antarctica's 327 km/h stands as the highest non-tropical-cyclone surface wind officially recognized by the WMO.