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.

May at this spot in Japan offers decent surf conditions with an average swell height of 1.3m and a solid 8.1s period, providing enough energy for quality rides. The swell is predominantly from the ESE, SE, and SSE directions, with the highest frequency of rideable waves (1-2.5m) coming from these angles. Swells from the E and ESE contribute the most to the larger wave range (1.5-2.5m), making them ideal for intermediate to advanced surfers. Wind conditions are only ideal 25% of the time, but when favorable, they tend to be light to moderate (10-20kph) and from the SE to SSE, which can enhance wave shape. Stronger or onshore winds (NE to ENE) do occur, potentially ruining conditions, so timing sessions around wind shifts is key. Expect a mix of smaller, playful waves and occasional bigger sets, with the best days likely when ESE swells combine with lighter S/SSE winds. Consistency is decent, though not guaranteed daily—watch for those clean mid-period swells for the best sessions.