Sherman Island: From Windsurfers’ Secret to Wind Sports Capital — and Why It (and SF Bay) Are Both Great Places to Learn
An hour and a half inland from the ocean, in the flat farmland of the Sacramento–San Joaquin Delta, sits one of the most reliably windy places on the West Coast. Here’s how it became one, and why beginners shouldn’t overlook it — or its coastal cousin back in the city. Two destinations, two hours apart, both genuinely learnable.
A Short History of Wind Sports at Sherman Island
Sherman Island sits at the western edge of the Sacramento–San Joaquin River Delta, a flat expanse of levees and farmland that doesn’t look, at first glance, like it belongs on any list of great wind sports destinations. It earned its place on that list almost by accident — a handful of windsurfers went looking for wind in the late 1970s and found more of it, more reliably, than almost anywhere else in Northern California.
Late 1970s–80s
Windsurfers discover Sherman Island’s steady 15–25 knot summer afternoons. A dedicated windsurf shop opens by the mid-1980s; Sherman Island County Park is formally established in 1992, cementing it as a permanent destination.
Late 1990s–2003
Kiteboarding arrives, blending windsurfing, wakeboarding, and paragliding. It’s easier to pick up than windsurfing, and windsurfers start switching over. The first dedicated kiteboarding shop opens in 2003.
Early–mid 2000s
Kiteboarding overtakes windsurfing as the dominant sport on the water. A real community forms around it — roughly 50 campsites fill most summer weekends, and the “Sherman Gathering” becomes an annual tradition.
2019–present
Wing foiling arrives, borrowing pieces from both windsurfing and kiteboarding. By 2023, wings are nearly as common a sight on the water as kites on a busy summer day.
What’s notable about that timeline isn’t just that three sports took turns being popular — it’s that the community never really turned over. The same campground, the same afternoon rhythm, and largely the same people rolled from windsurfing into kiting into wing foiling as each new sport made the wind more accessible to more people. Sherman Island didn’t become a “kiteboarding destination” or a “wing foiling destination” so much as it became a wind sports destination that has hosted three generations of gear.
What Actually Makes the Wind So Reliable
The simple version is that Sherman Island sits almost exactly between two very different air masses: cool, dense marine air over San Francisco Bay, and hot inland air over Sacramento, which regularly tops 100°F in summer. That temperature difference wants to equalize, and the path of least resistance runs straight through the Delta.
The more interesting version is that Sherman Island doesn’t just catch that airflow — it accelerates it. The Montezuma Hills to the north and steeper terrain near Pittsburg to the south squeeze the air horizontally, while an inversion layer overhead compresses it vertically, creating what local meteorologists call the Montezuma venturi: a genuine funnel that speeds up wind that was already flowing, the same way water speeds up through a narrow section of a hose. It’s a close cousin of the effect that drives wind through the Golden Gate into San Francisco Bay — both are ultimately powered by the same Bay-to-Valley temperature gradient — but Sherman Island adds a second, mechanical layer of amplification on top of it. The result is wind that blows nearly every day from April through September, with June through August the most reliable stretch of all.
Two Regions, Two “Right Zones” for Beginners
Here’s the thing both of these destinations have in common that doesn’t get said often enough: the region being famous and windy is not the same thing as the region being beginner-friendly, and both Sherman Island and San Francisco Bay have a genuine split between water that’s excellent to learn on and water that will simply overpower you.
🌉 San Francisco Bay
- Advanced: Crissy Field and Ocean Beach — strong currents, ship traffic, gusty bridge-and-cliff-disturbed wind
- Beginner-friendly: Alameda, Coyote Point, Third Avenue — flat water, gentler wind, easy access
- Best season: May–September, afternoons
🌾 Sherman Island / the Delta
- Advanced: the open river channel — strong tidal currents, submerged roots, narrow reed-lined launches
- Beginner-friendly: protected, flatter water riding upwind toward the islands, supported by decades of local instructor infrastructure
- Best season: April–September, June–August peak
The practical lesson is the same in both places: don’t let a region’s reputation as “advanced” or “beginner” decide things for you at the level of the whole map. Sherman Island has genuinely protected, flat-water zones perfect for a first season on the foil, just as San Francisco Bay has genuinely hazardous water sitting a mile from genuinely gentle water. What actually matters is knowing which zone you’re standing on, and that’s exactly what a good local school is for.
🏖️ Learning on the SF Bay Side
If you’re based in the city or the Peninsula, SF Wingfoil Academy is the school built for exactly this — lessons at the Bay’s genuinely beginner-friendly spots like Alameda and Coyote Point, with instructors who know which launch suits the day’s wind and tide rather than defaulting to the postcard water under the bridge. Sherman Island’s own long-running community of local shops and instructors plays the same role out in the Delta, a legacy of nearly five decades of wind sports history on that side.
🎯 The Short Version
Sherman Island earned its reputation the slow way: windsurfers found it in the late 1970s, kiteboarding took the community over by the early 2000s, and wing foiling has spent the last several years folding into the same culture. Its wind is world-class thanks to the Montezuma venturi stacking on top of the same Bay-Valley temperature gradient that also powers San Francisco Bay. Both regions are legitimately learnable — the trick in either one is picking the right zone and the right instructor, not just the right region. For the Bay side, that’s SF Wingfoil Academy.
Sources: SF Wingfoil Academy: The Rich History of Windsports at Sherman Island · SF Wingfoil Academy: Sherman Island, Premier Destination · CapRadio: Kite Boarding Scene Takes Off On Delta’s Sherman Island · WeatherFlow/Tempest: Sherman Island and the Montezuma Venturi · Ze Wandering Frogs: Sherman Island Kiteboarding Guide
