Omaezaki - surf spot statistics

Omaezaki, Japan, offers surfable conditions year-round, but the best months for quality waves are typically from July through November. During this period, the percentage of ground swell increases significantly, peaking in August (28%) and remaining relatively high through September (26%) and October (21%). Ground swells tend to produce cleaner, more organized waves compared to wind swells, which dominate the rest of the year. The average swell size hovers around 1.2-1.3m during these months, providing consistent, rideable waves without being overwhelming. Wind conditions also improve slightly in the late summer and early fall, with better offshore or light wind days occurring more frequently—September and October stand out with good wind conditions around 22-23% of the time, compared to the rest of the year where bad winds dominate (77-85%). Winter and spring months (December to June) are less ideal due to the overwhelming prevalence of wind swells (82-90%) and poor wind conditions (81-86%). While the swell size is comparable (1.1-1.4m), the wind-affected waves and lack of ground swell make sessions less reliable. July marks the transition into better conditions, but August through October is the sweet spot for surfers seeking a balance of swell consistency, size, and manageable winds.

In January, Omaezaki offers surfable conditions, though the overall setup leans toward inconsistency. The average swell height is 1.4m with a period of 6.4s, suggesting mostly small to mid-range waves, though occasionally larger sets may push through. The dominant swell directions are from the W, WNW, and WSW, contributing to the majority of rideable waves, with the W sector delivering the most significant energy—especially in the 1-2.5m range. However, NE, ENE, and SW swells also provide opportunities, albeit less frequently. Wind conditions are a limiting factor, with only 14% of days offering ideal onshore or cross-shore breezes (typically from the NE, ENE, or SW). The most problematic winds come from the WNW and NW, often blowing offshore at moderate to strong speeds (20-50+ kph), which can create challenging chop or overly powered-up conditions. For experienced surfers, the best windows will be during W/WNW swell events paired with lighter NE or SW winds, offering cleaner faces. Smaller days (under 1m) are common, but patience and timing are key to scoring quality sessions this month.