Ataka - surf spot statistics

Ataka, Japan, is primarily a windswell-dominated surf spot, with ground swells playing a minimal role throughout the year. The best months for surfers are typically during the winter season, from November to February, when swell activity is highest and wave size is most consistent. November stands out with 90% wind swell and 2% ground swell, along with slightly better wind conditions (22% good winds) compared to other months, making it a solid choice. December and January also offer strong conditions, with mean swell sizes reaching 2.0m and 2.1m respectively, though wind conditions are less favorable (only 17-19% good winds). February follows closely with a 1.8m mean swell size, maintaining decent surf potential despite similar wind challenges. Outside winter, surf quality drops significantly: from March to October, wave size diminishes (1.3m in March down to 0.5m in June/July), and wind conditions remain poor (over 80% bad winds). Swell consistency also weakens, with increasing no-swell days, particularly from May to September. For experienced surfers seeking the best balance of swell and wind, November is the top pick, while December through February provide the most reliable waves, though with tougher wind conditions. The rest of the year is generally subpar, with small, inconsistent swells and unfavorable winds.

November at Ataka offers fairly consistent surf with an average swell height of 1.5m and a decent period of 7.3s, indicating mostly organized, rideable waves. The dominant swell directions are NNW, NW, and WNW, which together account for the majority of waves in the 1-2.5m range, with larger sets occasionally pushing overhead (2.5m+). These swells produce the best conditions when they align with the beach's orientation. Smaller swells from the N and S sectors are less frequent and generally weaker. Wind conditions are a mixed bag—only 22% of the time do winds align favorably for surfing, typically from the NE to SE range, which provide offshore or light cross-shore flow. However, stronger onshore winds (WNW to SSW) are more prevalent, especially in the 10-30kph range, which can create choppy or less ideal conditions. Surfers should target days when NNW/NW swells coincide with lighter NE/ENE winds for cleaner, more powerful waves. The spot handles mid-sized swells well but can get inconsistent on smaller days, so patience and timing are key.