The correct option is this: THEY ARE WARMER THAN EXPECTED IN WINTER.
There are three basic seasons in each year, these are: winter, spring and autumn. In term of coldness, the winter is the coldest season of these three seasons. The high specific heat capacity of the ocean water influences the climate in the coastal area of Florida by making the heat absorb by the ocean water last longer and thus making the climate to be warmer during the winter season, which is expected to be very cold.