Manasquan Inlet - surf spot statistics

Manasquan Inlet is a surf spot largely dominated by wind swells, with ground swells being relatively rare. The best months for surfing here are typically late summer and early fall, specifically from **August to October**, when ground swell activity increases slightly and wind conditions improve marginally. September stands out with 20% ground swell occurrence—the highest of the year—alongside reduced no-swell days (19%) and a mean swell size of 0.8m, offering more consistent rideable waves. While wind conditions remain suboptimal (71% bad winds even in September), this period still provides the best balance between swell energy and surfable days. Winter and early spring (November to March) bring choppier conditions due to strong onshore winds (bad wind conditions exceeding 80%) and smaller, wind-driven swells. Summer months (May to July) see a drop in swell size (0.6-0.8m) and persistent bad wind conditions (70-73%), though June and July offer slightly better wind windows (30-31% favorable winds). Overall, surfers can expect the most reliable sessions in late summer and early fall, but must contend with generally poor wind alignment year-round. The spot favors those comfortable with wind swell surf, as clean conditions are rare.

January at Manasquan Inlet offers surfable conditions, though it’s not the most consistent month for high-quality waves. The average swell height is modest at 0.7m with a decent period of 7.7s, suggesting mostly small to medium waves with occasional energy from longer-period swells. The primary swell directions are ESE and SE, contributing the most rideable waves, especially in the 0.5-1.5m range. These swells provide the cleanest shapes, particularly when paired with favorable offshore or light cross-shore winds. However, the wind is only ideal for surfing 18% of the time, with the biggest challenge being onshore winds from the W, WNW, and NW, which are frequent and often strong (20-50kph). These winds can create choppy or blown-out conditions. Larger swells over 1.5m are rare and mostly come from the E or ESE, offering more powerful but less frequent sessions. For advanced surfers, patience and timing are key—target days with ESE/SE swells and lighter winds (under 20kph) from the N or NE for the cleanest waves. Winter storms can occasionally deliver bigger, rougher surf, but overall, expect smaller, playful conditions with some wind challenges.