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.

In January, Ozaki experiences moderately consistent surf with an average swell height of 1.1m and a decent period of 7.6s, offering rideable waves for intermediate surfers. The primary swell directions are from the NNE, E, and ESE, with the most favorable wave heights (1-2.5m) occurring about 10-15% of the time. Larger waves (over 2m) are relatively rare but most likely from WNW and W directions. Wind conditions are often challenging, with ideal offshore winds (for this spot) occurring only 16% of the time. The predominant winds come from the NW and WNW, frequently blowing at 20-40kph, which can create choppy or crossed-up conditions. For surfers, the best windows are likely during lighter NNE or E winds, when cleaner shoulders form. Expect variable conditions—days with fun, peaky waves mixed with windy, messy sessions. Winter swells bring energy, but patience is key for optimal sessions.