Cape Cod weather in September
Mild and comfortable, with some rainy days. Average highs of 22°C and lows of 17°C, with around 10 rainy days expected throughout the month.
While September isn't our top-rated month for Cape Cod, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
22°C
Average low
17°C
Rainy days
10 days
Best months to visit
July, August
What to do in Cape Cod in September
Whatever the weather, Cape Cod rewards curious visitors. Here are some of the best ways to spend your time:
Explore
Dine
Culture
Nature
Shopping
Day trips
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
4C
Cold, with some rainy days.
February
4C
Cold, with some rainy days.
March
6C
Cold, with some rainy days.
April
11C
Cool, with some rainy days.
May
16C
Cool, with some rainy days.
June
21C
Mild and comfortable, with occasional showers.
Recommended
July
25C
Warm and pleasant, with occasional showers.
Recommended
August
25C
Warm and pleasant, with occasional showers.
September (you are here)
22C
Mild and comfortable, with some rainy days.
October
17C
Cool, with some rainy days.
November
11C
Cool, with occasional showers.
December
7C
Cold, with some rainy days.
Book your September trip to Cape Cod
Find hotels, tours and experiences for the perfect escape.
