Ozaki - surf spot statistics

Ozaki, Japan, offers surfable conditions year-round, though the best months for quality waves and favorable winds are typically from July to November. During this period, the swell consistency improves, with ground swell percentages rising significantly in August (29%) and remaining strong through September (27%) and October (25%). These months also bring larger mean swell sizes, averaging 1.5m to 1.6m, providing more powerful and cleaner waves compared to the rest of the year. Wind conditions are most favorable in July and August (29% good winds), though they start deteriorating by September (18%). Early winter months like December and January see smaller swells (1.1m) and poor wind conditions (81-84% bad winds), making sessions less reliable. Spring and early summer (May-June) have high wind swell dominance (90-93%) but suffer from onshore winds 75% of the time, leading to choppy surf. While Ozaki can work in winter, the autumn months—particularly August to October—deliver the best combo of swell size, ground swell contribution, and manageable winds.

April at Ozaki offers moderately consistent surf with an average swell height of 1.4m and a decent period of 8.3s, indicating mostly clean, well-spaced waves. The primary swell directions are from the ESE and E, contributing the most frequent and rideable waves in the 0.5–2.5m range (with ESE swells dominating at 1–1.5m). Larger swells (2m+) are less common but occur occasionally from the S and SSW. Wind conditions are less favorable, with only 20% ideal offshore or light cross-shore winds—typically from the W/NW quadrant. However, onshore winds (E/SE) prevail, which can chop up conditions. For advanced surfers, mornings may offer cleaner sessions when winds are lighter, and mid-period swells (8–10s) from the E/ESE provide the best shape. Expect smaller, weaker waves early in the month and slightly larger, more consistent energy toward late April. Pack a standard shortboard and a step-up for bigger days.