It depends which sea you refer to, where you live. in the tropics it matters less because it is almost always warm, but in temperate zones it will be different in summer & winter. In the polar extremes it is always cold.
The Indian ocean is the warmest ocean
The warmest ocean in the world is the Indian ocean.
the Indian Ocean
No it's not.
The top layer of the ocean is the warmest because it is always in contact with the sun.
The warmest ocean is the Indian Ocean. The temperature of the surface water is sometimes as warm as 36.6 degrees Celsius. However, in the south, the waters become icy cold where the Indian Ocean meets the chilly Southern Ocean.
If you are talking in terms of the ocean the smallest is the Indian Ocean. The coldest is the north pole ocean. The warmest is the Indian Ocean. The saltiest is the Atlantic Ocean.
The Pacific
August traditionally is the warmest month
Indian Ocean is warmest!
July or August
At the surface of the ocean in the warmest area of the ocean.