San Diego weather is often the weather that laughs at you. For some reason, the forecast will say clear skies and clouds will roll in off the ocean, or the forecast will tell you to wear a jacket for an overcast day and the sun will come out to play.
Key Difference: Oceans are large bodies of water that exist on the Earth. Oceans and seas are both bodies of water and these terms are often used interchangeably due to their lack of proper definition. Water bodies make up the hydrosphere that covers 71% of the Earth. Oceans and seas have slight differences among them.
(p90) Seas are generally larger than lakes and contain salt water. While the defining elements of size and being bounded are generally used, there is no formally accepted technical definition of sea among oceanographers. In international law, the United Nations Convention on the Law of the Sea states that all the ocean is the sea.