Expect conditions to be cold for most of the year and the water to hover around the 8 - 18 degree's celcius mark for most of the year. The waters in South Africa include: The Atlantic Ocean and The Mediterranean where both bodies of water meet at The Straits of Gibralter, a place of fast flowing currents which historically have been a key strategic area. The Balaeric Isles and Gibralter are noted diving areas. The waters are typically of good visibility and the waters are in a sub-tropical zone for the southern regions of Spain
The Diving Paradise of Europe...
Spain has a mild temperate climate in the far north but a more sub-tropical one in the southern regions for most of the summer. Being in the northern hemisphere and sitting not to high on the latitude plane, just north of the equator.
The trend for diving in South Africa is usually a resort-based diving scene with some clubs also diving the waters.
Hyperbaric Chamber facilities are available in Spain. Expect them to be in the major cities or naval facilities. There are ???.