Ah, England. One of the chilliest periods I ever spent in my life was April in London.
Be that as it may, when I saw this scene in Persuasion 2007, I realized how much the settings added to the drama in this film adaptation. The Cob seemed cold and forbidding, and the waves were ominous. Considering the state of Captain Wentworth's and Anne's feelings, and their anxiety (or fearfulness) of being rejected by the other, this scene was quite apropos.