A causeway linking Seconsett Island to the mainland between Waquoit Bay and Hamblin Pond, better known as a shellfishing and small-boat access point than a swimming beach. The Harbormaster and Natural Resources offices sit right at the landing.
What to expect
Swimming
Water not monitored off-season
Entry fee
You don't need a parking sticker for this spot; Parking at Mashpee's conservation land trailheads, town landings, and boat ramps doesn't require a sticker or permit under the town's bylaws. checked Jul 24, 2026
Dogs
Dogs are not allowed year-round on Mashpee's town-owned beaches. Posted signs at the site take precedence.
Fishing
Allowed year-round
Managed by
Mashpee Department of Natural Resources / Harbormaster 508-539-1410 ·
Worth knowing
- The Town's Department of Natural Resources runs shellfish propagation and oyster-season openings from the causeway, and offers clamming lessons through the Recreation Department.
Tides & weather
Tide and sun: NOAA astronomy · forecast: NWS, up to 7 days
Show the full year
Average water temperature at Seconsett Island Causeway by month, in °F| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Water °F | 39° | 37° | 41° | 48° | 56° | 66° | 73° | 74° | 70° | 62° | 54° | 44° |
|---|
Monthly averages from NOAA, Woods Hole (2022 to 2024). Today's reading is in the conditions above.
Common questions
Is Seconsett Island Causeway in Mashpee open today?
Seconsett Island Causeway 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.
What's the water temperature at Seconsett Island Causeway?
Water at Seconsett Island Causeway averages about 37°F in February and 74°F in August, based on NOAA readings at Woods Hole from 2022 to 2024. For today's temperature, see the conditions above.
Can you swim at Seconsett Island Causeway?
There is no MA DPH swim status for Seconsett Island Causeway 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 Seconsett Island Causeway?
Dogs are not allowed year-round on Mashpee's town-owned beaches. Posted signs at the site take precedence.
Is there an entry fee at Seconsett Island Causeway?
You don't need a parking sticker for this spot; Parking at Mashpee's conservation land trailheads, town landings, and boat ramps doesn't require a sticker or permit under the town's bylaws.