Cape Cod Weather

With a maritime climate that creates ever-changing weather from day to day and day to night, guests of Cape Cod house rentals would be prudent to pack a diverse selection of clothing since it is never certain what the ocean will bring. While the mid-summer months of July and August are sunny and warm with afternoon temperatures in the 70s to the low 80s, the nights are significantly cooler and a chilly, mid-day breeze near the beach is not an uncommon occurrence. The early and late summer months of June and September usually have highs in the 60s and 70s and while a relaxing day at the beach is sometimes possible during this time, the weather is more suited for strolling rather than swimming.

While October brings classic fall days, the night temperatures can reach all the way into the 30s and have quite a chill. However, once November rolls around, the temperate climate becomes even more apparent as the winter is not as cold and severe as most individuals would imagine. While snow is a possibility in December with daily averages around 30 degrees, January and February, typically the coldest months, bring rain and snow along with highs all the way in the upper 30s and lows into the lower 20s. After a relatively warm winter, spring does not descend upon the Cape until the end of April (a little snow in early April is common) and with it comes chilly days in the 50s and 60s along with favorite outdoor activities such as birdwatching and hiking.

In addition, remember that the offshore breeze is significantly colder than on land, so if you plan on setting out on a fishing or whale watching excursion, be sure to dress for the much cooler temperatures on the open ocean. Since the climate on Cape Cod is unpredictable (it can be sunny on one side of the Cape while only a half hour away on the other side it is cloudy and cool), it is best to be prepared for the worst no matter what time of year you visit.

CHATHAM, MA	High	Low	Rainfall
Jan	38	24	4.2"
Feb	38	24	4.0"
Mar	43	31	4.1"
Apr	50	39	4.0"
May	59	48	3.7"
June	68	56	3.4"
July	75	62	3.4"
Aug	74	62	3.3"
Sept	69	57	3.9"
Oct	60	47	4.1"
Nov	51	39	3.9"
Dec	43	30	4.6"
Annual	56	43	46.7"

Weather data courtesy of NOAA

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