 Besides India, Burma, and Yunnan, Zayü borders Zogang County to the north and Mêdog County to the southwest.Owing to its moderate elevation (for Tibet), Zayü has a subtropical highland climate (Köppen "Cwb"), a rarity in Tibet, with mild and quite dry winters, and warm, rainy summers.The rainy season lasts from March to September, and June through August each average more than 20 days of rainfall per month.