Hokkaido - surf spot statistics

Hokkaido’s surf conditions are heavily influenced by seasonal wind patterns and swell consistency. The best months for surfing are generally from August to October, when ground swell percentages peak (13% in August and September, 12% in October) and wind conditions are relatively better (12-14% good wind days). These months also offer the most consistent swell presence, with "no swell" days dropping to 41-42%, and mean swell sizes hovering around 0.7m—modest but surfable for experienced riders. Early spring (March-April) shows a slight uptick in ground swell (8-9%) and manageable wind conditions (9-11% favorable), though wind interference remains high (89-91% bad wind days). Winter months (November-February) are challenging, with low ground swell (4-7%), frequent poor winds (93-94%), and a high percentage of no-swell days (44-56%). Summer brings mixed results—July and August see improving ground swell, but June is inconsistent. Overall, late summer and early autumn provide the most reliable conditions, while winter is largely unfavorable due to onshore winds and weak swell. Surfers should prioritize August-September for the best balance of swell and wind.

February in Hokkaido offers small to medium-sized surf, with an average swell height of 0.6m and a decent 7.1s period, providing some rideable energy despite the modest size. The best swells come from the SE, SSE, SSW, SW, WSW, and WNW directions, with the highest frequency of waves in the 0.5-1.5m range—SE and WSW swells occasionally produce bigger sets up to 2.5m. Wind conditions are often challenging, with only 6% of days offering ideal offshore or light cross-shore winds. Strong winds are common, particularly from the W, WNW, and NW, frequently blowing 20-40+ kph, which can create choppy or blown-out conditions. Surfers should target days with SE or SW swells paired with lighter winds for the best sessions, but expect variable quality and frequent wind interference. Winter gear is essential due to the cold. Overall, it’s a hit-or-miss month with occasional good windows.