Oiso Jetty

Oiso Jetty is a fairly exposed beach/sandbar/jetty surf break on Sagami Bay that is best known for dependable conditions in autumn—most often October. The spot is rated as a 3 in surf-forecast data, and it’s described as having quite reliable surf when the right offshore wind and swell combine. The most favorable setup is a southeast swell meeting northwest offshore wind, which is reported to clean up the face and improve wave shape. When conditions line up, surfers can find fast, hollow sections off the jetty, including right-handers. The break can be quite powerful and steep, so it tends to reward riders who can handle higher energy beach-break surf. Safety is a major consideration here. The jetty area is associated with strong rip currents, especially near the jetty and after heavy swell, and the shore break is described as famously heavy. Submerged debris can also be an issue (with extra caution during typhoon season), and crowding can raise the risk during peak times. For timing, early mornings are often reported to have better wind conditions before any summer sea-breeze effects develop. With respect to etiquette, priority is given to those already on the wave, and localism can be moderate—so being respectful in the lineup matters. Lifeguards are seasonal, and rescue availability is limited, so plan accordingly and surf within your limits.