Desert heat hitting 50°C+ in summer, but perfect 20-25°C winters — two extreme seasons.
80% desert! Rub' al Khali (Empty Quarter) — world's largest sand desert. Sand dunes up to 300m. Oases dot the landscape.
Hajar Mountains (East) — UAE's only mountains. Jebel Jais: 1,934m (highest). Wadis (seasonal rivers). Fujairah side — green!