The Red Sea offers a year-round diving due to its arid desert climate. The rainfall is extremely low, most of rain falls happen in the winter months. The high season for visiting the Red Sea is from March to November. The average air temperature during the cool season (November to April) is about 22C/71F and during the hot season (May to October) it is about 33C/91F. The average water temperature stays around 28C/82F in the summer and 20C/68F in the winter, with temperatures being a few degrees warmer on the south part of the Red Sea. The visibility varies from 20m/65ft to 40m/131ft in deep water. The currents vary from gentle to strong.
What to see
These waters are inhabited by more than 1,000 species of invertebrates, over 200 species of soft and hard corals and about 1,100 species of fish, 20% of which are endemic to the Red Sea. There are different species of sharks, including thresher shark that can be best spotted during autumn and winter, whale shark watching season occurs from the end of May until the end of July, and hammerhead sharks that can be spotted during the summer months.