Hadschar-Gebirge
Saiq has a cold semi-arid climate (Köppen climate classification: "BSk"), with very warm summers and cool winters. Precipitation is higher, and temperatures are lower, than in many other towns in Oman due to its high altitude in the Al Hajar Mountains. The highest temperature recorded in Saiq is , recorded on August 1, 1997, and the lowest temperature is , recorded on January 26, 1983.