Conditions at Katagai in March
March: Bigger Swell, Fading Winds
March brings the highest average swell height of the year so far at 1.4m (about 4-5ft), and the direction becomes even more favorable: ENE, E, ESE and SE swells combine for roughly half of all wave energy. The trade-off is that offshore wind consistency drops to 29 percent as the Siberian High weakens and low-pressure systems start to drift closer to Japan. Expect more mixed conditions with NE/NNE winds often competing with southwesterly afternoon sea breezes. Water temp rises slightly to 13.4°C and air temps creep toward 11.0°C, with precipitation increasing to 4.12 mm/day. The best windows still require a good winter wetsuit and a keen eye on the wind forecast.
Average Spot conditions at Katagai in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Katagai during March. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Katagai for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Katagai for March. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Katagai.