Taiz is a city in southwestern Yemen. It is located in the Yemeni highlands, near the port city of Mocha on the Red Sea, at an elevation of about …Taiz is a city in southwestern Yemen. It is located in the Yemeni highlands, near the port city of Mocha on the Red Sea, at an elevation of about 1,400 metres above sea level. It is the capital of Taiz Governorate. As of 2023, the city has an estimated population of approximately 940,600 residents making it the third largest city in Yemen.