THe red sea

Overview
The Red Sea Riviera, Egypt's eastern coastline along the Red Sea, consists of resort cities on the western shore of the Gulf of Aqaba and along the eastern coast of mainland Egypt, south of the Gulf of Suez. The combination of a favorable climate, warm sea, thousands of kilometers of shoreline and abundant natural and archaeological points of interest makes this stretch of Egypt’s coastline a popular national and international tourist destination. There are numerous National Parks along the Red Sea Riviera, both underwater and on land. Desert and marine life are protected by a number of laws, and visitors may be subject to heavy fines for not abiding by regulations
Weather and Temperature
The best months to visit Red Sea are November and April. Weather is perfect, with average 28°C air and 23°C water temperature. But even in January you can swim, snorkel or dive so you can enjoy Red Sea all year long. The average temperature very between 21°C during colder months, there are many days with much higher temperature. On such days, you can spend whole day on the sun without getting burned.
Wind is a bit stronger sometimes, and although it cause chilly feeling, it’s not enough to stop people from swimming and snorkeling. During summer months temperatures are higher but dry weather make it a lot easier. Click here to check weather averages. 
Scuba Diving
The Red Sea is considered to be one of the 7 Wonders of the underwater world, harbouring more than 1,000 species of invertebrates and over 200 species of soft and hard coral. This forms the basis of a marine eco-system which includes 1,100 species of fish, of which just under 20% are endemic to the Red Sea, i.e. these fish species can only been found here. The high level of endemism here is one of the main factors that makes Egypt scuba diving so interesting. The Red Sea dive sites offer you unobstructed opportunities to spot tropical marine life in crystal clear waters, ranging from sharks and dolphins to gorgonian fans and feather-stars. Variety is in no short supply either and depending on where you choose to dive. Your diving holiday can include shallow patch reefs, drift dives and walls, or a collection of some of the most interesting wrecks you are likely to find anywhere. In other places vibrant reefs stretch out far into the sea and form intricate labyrinths of plateaus, lagoons, caves and gardens. One moment you could find yourself on a coral garden atop a summit and the next a sheer wall could plunge thousands of feet into dark ocean depths. The Red Sea's abundance of marine life and depths of the reef are a thrill that many divers will tell you is unbeatable.