It’s extremely cold here. Climatically, the best months to visit are August, September and October, after the worst of the winter chills and before the summer rains. From May to early July, night-time temperatures combined with stiff winds can lower the wind-chill temperature to -40.5°C. Summer is warmer but, for an arid area, there’s quite a lot of rainfall between November and March. At any time of year you’ll need protection against sun, wind and cold.