Because @Seeds already pointed out the implausibility of keeping such a temperature difference, let's assume that the land is magically kept insulated from the ocean at 14 degrees, while the atmosphere is not, and look at the weather consequences.
Approximately 35 degrees is a reasonable number for the core temperature of a typical hurricane. The vapor pressure of water at 80 degrees C is 355 torr, compared to 42.2 torr at 35 degrees. This means that the air in a typical storm can hold eight times as much water as an Earth tropical cyclone, and that, as a first approximation, rain would fall eight times as densely as in the middle of a typhoon. Rivers would have 8 times the flow rate as Earth rivers during monsoon season. This means 8 times the flooding, and at least 8 times the erosion potential. In some places, canyons could be carved out of solid rock in just a few tens of thousands of years.
The temperature difference between the 80-degree ocean and the 14-degree land would be 3.5 times greater. Again as a first approximation, storm wind speeds would be 3.5 times greater. This means that, rather than an ordinary gale with 50 km/h winds, coasts would experience winds of around 170 m/s, the eyewall of a Category 4 hurricane. Ordinary humans cannot walk outside in these winds. There will be no sand on beaches except in drifts and dunes.
These numbers aren't just maximums. They occur on every coastline, everywhere on the planet, every day.
Possible beneficial effects
At a high tech level, electricity production is much easier. Small wind farms and hydrothermal power plants are in every coastal settlement in the world (the settlements themselves are all underground, of course).
@Palarran said that the oceans would boil/evaporate away at a high enough temperature. This would happen, but I don't think it would be a problem for your world.
As you can see, water (and ammonia and methane) will not escape from the planet's atmosphere if its size is similar to Earth. Therefore, the evaporation of the oceans will stop once it reaches equilibrium, so we can assume that there's just more water to start with.
Life originating in the oceans would have had a difficult time surviving to land even over millions of years of evolution, since the environments are so different; I cannot go into how or even if it's possible. But organisms will use this temperature difference to thrive: possibly through harnessing the mechanical energy of wave action. Many may still use photosynthesis or chemosynthesis.