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Cape Cod weather is Appallachian. Meaning that we have the same weather pattern on the Cape, as the Appallachias have to north Georgia. We are about twenty degrees cooler in the summer than the mainland and twenty degree warmer in the winter. The ocean does it. That also means we have a long spring warmup as the ocean slowlywarms and a long fall cool down.
In summer, at night and on the water or on the beach the temperature can drop to the fifties (or water temp) and the humidity rise to 100%. It is often foggy in the early summer morning as the water cools and condenses the warm land air along the shore.
The prevailing wind is from the southwest, about 14 knots. That makes the Cape about the third windiest place in the country. Such wind is mitigated or advanced by the onshore breeze of a warming landmass or the offshore flow of a clear and cooling night. That breeze is welcome to refresh the heat of summer sun.
Fall, as I mentioned, is lingering. Warm and gentle and possibly the finest season on the Cape. Water remains warm enough to swim in 'til November and the days are sixties and nights fifties. If we don't get a Hurricane or Nor'Easter, this is the place to be.
Winter begins about Thanksgiving. Sub-freezing temperatures
are rare during the day on the Cape in winter, though the wind can make
it feel so. So chill nights and cool days are the rule from November to
March. If it snows, it rarely holds for more than a few days and rarely
amounts to more than a few inches.
Spring and lions have nothing in common on the Cape. Spring lingers
cool and grey for a long time while the ocean warms. The Sound and Bay warm
up to the bather by June, the Atlantic is, well, brisk.
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National Weather Service - Boston Coastal MArine Forecast - Boston |
This page updated 6/1/98.
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