As winter weather envelops the homes of New England, our thoughts naturally turn to warmer days and maybe a beach house on Cape Cod. Of course, if you intend to rent such a house for a week next summer, it\u2019s pretty much a roll of the dice. You could get lovely weather or it could rain every day. However, if you plan to\xa0buy\xa0a beach house on Cape Cod, you really only need to understand the climate. The sunny summer days will far outnumber the wet ones.