Weather barriers while migrating to Saudi Arabia . Saudi Arabia has a semiarid to hyper arid climate characterized by very low rainfall and very high temperature, resulting in water scarcity and reduced vegetal cover. This country follows the desert climate. Increasing frequency of extreme heat index days is particularly threatening regional habitability in Jeddah. Due to high temperature in Saudi Arabia skin burn, heat edema and heat stroke are common. Its high temperature can also cause heat exhaustion- which can lead to blurry vision, nausea, vomiting and diarrhea. Saudi Arabia is particularly vulnerable to climate changes as most of the ecosystems are sensitive and its renewable water resources are limited.