Seal Beach - surf spot statistics

Seal Beach, located in Southern California, offers relatively consistent but small surf throughout the year, with ground swells being the primary swell source. The best months for surfing tend to be from May through September when ground swells are most frequent, peaking at 60-61% in May and August. During this period, the likelihood of no swell drops to around 33-38%, meaning more rideable days. However, the mean swell size remains modest at 0.6m, indicating mostly small to medium conditions suited for beginners and longboarders. Wind conditions are generally unfavorable year-round, with bad winds (onshore or strong cross-shore) dominating 80-89% of the time. The least windy months are June and July, but even then, only 11% of days have good offshore winds. The swell quality deteriorates from October to December, with ground swells dropping below 40% and no-swell days increasing to 59-64%. Winter months also see slightly smaller swells (0.5m) and persistently poor wind conditions. Overall, Seal Beach is most reliable in late spring and summer, though surfers should expect smaller waves and mostly challenging wind conditions. The spot is ideal for those seeking mellow waves rather than powerful breaks, with the best window being May to August when ground swells are most consistent.

October at Seal Beach generally offers small to moderate surf conditions, with an average swell height of 0.5m and a decent period of 14.3s, suggesting clean, well-spaced waves. The swell predominantly comes from the south (S, SSW) and southwest (SW, WSW), with smaller waves (0.5–1m) being most common, though occasional larger sets (1.5–2.5m) from the west (W) can provide more punchy rides. Wind conditions are variable, with only 14% of the time being ideal for surfing—typically light offshore or side-offshore breezes. However, WSW and W winds (5–20kph) are frequent, which can create choppy conditions, especially in the afternoons. Overall, October is a mixed month: when the swell aligns with lighter winds, it can offer fun, rippable waves, but consistency and quality depend on swell timing and wind luck. Advanced surfers may find the occasional juicier W swell, while beginners will appreciate the smaller days. Keep an eye on forecasts for those cleaner sessions.