Madaket Harbor (Nantucket Island)

Madaket Harbor is a protected, shallow lagoon on Nantucket’s southwest side, described as having clean water and large areas of knee-to-waist-deep footing. For kitesurfing, the flat-water character and shallow depth make it well suited to learning, freestyle progression, and foil/routed freeride sessions—particularly from the main launch area near Warren’s Landing. Wind is most often discussed in terms of N, SW, and NW directions, with the best months running from May through September. In summer, an afternoon thermal sea-breeze pattern is described as a reliable build, typically in the afternoon window, while shoulder seasons can lean more frontal and may affect how steady the flat water feels. Safety is dominated by hydrodynamics and bottom conditions: strong tidal currents are specifically noted at the harbor mouth/“Gut” and around the western point. The bottom can include sharp submerged oyster shells, and boat traffic is present in navigation channels. Rescue availability is described as limited/far away from this spot, so planning around tide strength and wind range is emphasized. Water temperature supports longer sessions mainly in summer. Sources describe about 20–22°C in July and August, while spring and fall are much colder, matching wetsuit guidance that ranges from boardshort/shorty options in midsummer to full suits (and drysuit in colder months).