Nantucket in September
Great time to visit
Absolutely the sweet spot. Perfect weather, warm ocean, fewer crowds, and prices that don't require a second mortgage. Book early - locals know this secret.
Weather
September brings the best weather of the year - warm days around 23°C, cool nights, and low humidity. The oppressive heat breaks while ocean temperatures remain warm from the summer buildup. Rain picks up slightly but rarely ruins plans.
23°C high15°C low7 rain days
Crowds & Cost
moderate crowds
~$320/day average
Events & Festivals
- •Cranberry Festival
September Tips
- •Best month for cycling - rent from Young's Bicycle Shop and explore Polpis Road
- •Ocean water is at its warmest - perfect for swimming at Cisco Beach
- •Restaurant reservations still needed but easier to get than summer
All Months
July and August bring perfect beach weather, blooming hydrangeas, and shoulder-to-shoulder crowds. Hotel rates peak around $400+ nightly, and restaurant waits stretch past an hour. But the island hums with energy, and every beach day feels perfect.
May and September offer the sweet spot – warm enough for swimming (with a wetsuit), fewer crowds, and rates that won't bankrupt you. The cranberry bogs turn crimson in fall, and September sunsets rival anything summer offers. Spring brings daffodil festivals and the island waking up from winter hibernation.
October through April sees most restaurants and hotels close, ferries run reduced schedules, and the island population drops to year-round residents. Some find this peaceful; others find it boring. Winter storms create dramatic seascapes but limit outdoor activities to bundled beach walks.
Nantucket Scores
Solo
6/10
Couples
9/10
Families
8/10
Adventure
5/10
Budget
3/10
Luxury
9/10
BUILD YOUR NANTUCKET PLAN
Insider picks, smart timing, and a plan ready when you are.