Updated October 2026
Cape Cod National Seashore Weather by Month
Cape Cod National Seashore is warmest in July, when the nearest NOAA climate station averages a high of 79°F and a low of 64°F, and coldest in January, with an average high of 39°F and an average low of 26°F. December is the wettest month, with about 5 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 16.5 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Cape Cod National Seashore can differ from these, particularly with elevation.
Warmest month
Jul
79°F avg high
Coldest month
Jan
26°F avg low
Wettest month
Dec
5.0 in avg
Longest days
Jun
15.0 h of daylight
Average weather at Cape Cod by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 39°F | 26°F | 3.8 in | 9.3 h |
| February | 40°F | 26°F | 3.6 in | 10.4 h |
| March | 44°F | 31°F | 4.4 in | 11.7 h |
| April | 52°F | 39°F | 4.0 in | 13.1 h |
| May | 62°F | 48°F | 3.3 in | 14.4 h |
| June | 72°F | 57°F | 3.0 in | 15.0 h |
| July | 79°F | 64°F | 2.8 in | 14.8 h |
| August | 78°F | 64°F | 3.0 in | 13.7 h |
| September | 71°F | 58°F | 3.6 in | 12.3 h |
| October | 61°F | 47°F | 4.2 in | 10.8 h |
| November | 52°F | 39°F | 4.5 in | 9.6 h |
| December | 44°F | 31°F | 5.0 in | 9.0 h |
| Year total | 45.2 in |
NOAA 1991–2020 climate normals from station USW00094624, 16.5 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Cape Cod is at that time of year.
Cape Cod weather by season
Winter: December to February
Average highs bottom out at 39°F in January, between 44°F in December and 40°F in February, with average lows between 26°F and 31°F. The average low is at or below freezing in all three months. Together the three months average 12.4 inches of precipitation, about 27% of the yearly total and more than in any other season. Daylight is at its shortest, about 9.0 hours in December.
Spring: March to May
Average highs climb from 44°F in March to 62°F in May, with average lows between 31°F and 48°F. The average low is at or below freezing in March. Together the three months average 11.7 inches of precipitation, about 26% of the yearly total. Daylight lengthens from about 11.7 hours in March to 14.4 in May.
Summer: June to August
Average highs peak at 79°F in July, between 72°F in June and 78°F in August, with average lows between 57°F and 64°F. Together the three months average 8.8 inches of precipitation, about 19% of the yearly total and less than in any other season. Daylight is at its longest, about 15.0 hours in June.
Fall: September to November
Average highs fall from 71°F in September to 52°F in November, with average lows between 39°F and 58°F. Together the three months average 12.3 inches of precipitation, about 27% of the yearly total. Daylight shortens from about 12.3 hours in September to 9.6 in November.
What the National Park Service says about the weather
Cape Cod's weather is generally moderated by its proximity to the ocean. Winter is typically cold with some snow. Spring is often rainy. Summer is usually warm and humid. Fall is generally dry and clear.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Cape Cod
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 41.92°N, 70.04°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Cape Cod National Seashore →
Weather and crowds together
July, the warmest month, sees about 2.0× the visitors of the park's average month. August is the busiest month of the year and January the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Cape Cod National Seashore. For hotels, cabins and rentals close to the park, see where to stay near Cape Cod.
Where to stay near Cape Cod
Picked a month for Cape Cod National Seashore? Compare hotels, cabins and vacation rentals near the park with live availability and prices.
Top-rated places to stay near Cape Cod
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Frequently Asked Questions
July is the warmest month at Cape Cod National Seashore, with an average high of 79°F and an average low of 64°F. That is the 1991–2020 average at the nearest long-record NOAA station, 16.5 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Cape Cod National Seashore, with an average low of 26°F and an average high of 39°F, based on NOAA 1991–2020 climate normals.
December is the wettest month, with about 5 inches of precipitation. July is the driest, at about 2.8 inches. The station records about 45.2 inches of precipitation in an average year.
Daylight at Cape Cod National Seashore runs from about 9.0 hours a day in December to about 15.0 hours in June, computed from the park's latitude.
Weather at nearby parks
50 mi away · warmest in July (84°F)
55 mi away · warmest in July (83°F)
60 mi away · warmest in July (82°F)
60 mi away · warmest in July (80°F)
60 mi away · warmest in July (82°F)
62 mi away · warmest in July (84°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USW00094624), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.