Conditions at Choshi in March
March: Transitional Swell and the Spring Shift
March is a classic transition month at Choshi. The average swell height actually peaks for the winter season at 6ft (1.8m), and periods remain healthy at 9.6s, but the reliability of clean conditions starts to slip as the ideal wind frequency drops to 32%. The swell direction distribution broadens considerably: ENE/E swell now combine for nearly 30%, while SE/SSE/S/SSW energy makes up about 15%. This is the first month where true south swell starts to become more common, although the NE/NNE signature still dominates. The winds become fickle and the southerly component (SSW/SW) begins to build, putting onshore texture into the lineup. The Siberian High is losing its grip, and the stronger S/SW flows arrive with the Pacific High developing. Water temps are still cold at 12.1°C. March can offer some of the biggest surf of the year, but finding an offshore N/NNW wind window is increasingly about patience.
Average Spot conditions at Choshi in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Choshi 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 Choshi for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Choshi 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 Choshi.