A north-shore beach on Nantucket Sound with calmer water than the south-shore beaches, reached by a dune trail from a large unpaved lot. A bathhouse in the parking area gives it more built-out facilities than most of the island's other beaches.
What to expect
Swimming
Water not monitored off-season
Hours
Nantucket lifeguards are on duty from late June through Labor Day, roughly 9am to 5pm, and vehicles are barred from the lifeguarded beaches during those hours.
From late JuneAccessibility
Wheelchair-accessible restrooms and showers in the bathhouse; a metal ramp helps with the dune trail to the sand in summer, though there are no marked accessible parking spaces
Dogs
Leashed and licensed dogs allowed; not permitted in dune vegetation, marsh grass, or protected wildlife areas
Managed by
Parks & Recreation / Natural Resources Department
508-228-7230 · WebsiteGetting in
Parking
Dionis Beach lot
CostfreeSpaceslarge but unpaved with no delineated spots
No marked handicap spaces
Access points along this beach
Dune trail ramp
Metal ramp from the lot to the sand, installed each summer
What's here
Facilities
Restrooms
Bathhouse in the parking lot
Changing rooms
In the bathhouse building
Showers
Outdoor rinse spigots and bathhouse showers
Not here
No concessions
Vending machines only; no food service or nearby restaurants
Tides & weather
Tide and sun: NOAA astronomy · forecast: NWS, up to 7 days
Show the full year
Average water temperature at Dionis Beach by month, in °F| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Water °F | 39° | 38° | 42° | 50° | 57° | 67° | 76° | 75° | 69° | 61° | 51° | 42° |
|---|
Monthly averages from NOAA, Nantucket Island (2022 to 2024). Today's reading is in the conditions above.
Common questions
Is Dionis Beach in Nantucket open today?
Dionis Beach is not monitored right now. MA DPH samples beach water Memorial Day to Labor Day and posts no advisories or all-clears off-season, so there is no swim status to report. Swimming off-season is at your own risk.
Is there wheelchair access?
Yes, more than most Nantucket beaches: the bathhouse has accessible restrooms and showers, and a metal ramp bridges the dune trail in summer, though there's no marked accessible parking.
Are bathrooms open year-round?
No, the bathhouse operates seasonally in summer only.
Is there parking at Dionis Beach, and what does it cost?
Free lot (free). Dionis Beach lot
What's the water temperature at Dionis Beach?
Water at Dionis Beach averages about 38°F in February and 76°F in July, based on NOAA readings at Nantucket Island from 2022 to 2024. For today's temperature, see the conditions above.
What rules should I know at Dionis Beach?
No alcohol, glass, or smoking on public beaches, $300 fine for violations.
Can you swim at Dionis Beach?
There is no MA DPH swim status for Dionis Beach off-season: the state samples beach water Memorial Day to Labor Day. Swimming off-season is at your own risk; check conditions posted at the beach.
Are dogs allowed at Dionis Beach?
Leashed and licensed dogs allowed; not permitted in dune vegetation, marsh grass, or protected wildlife areas
Is there an entry fee at Dionis Beach?
No, entry is free.