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Conditions at The Island in March
March: Autumn Groundswell Starts Knocking
The march into autumn is unmistakable. Average swell height jumps to 6ft (1.8m), the average period pushes past 10.4s, and the S/SSE sectors take control. S swell is the single biggest direction at 15.2%, with SSE at 14.5% and SE at 13.6% - a combined 46.6% of all swell hitting the optimal directions. More importantly, S energy is concentrated in the 1.5-2m (5-6.6ft) and 2-2.5m (6.6-8.2ft) bins, so the Island is seeing its first serious groundswell pulses of the year. Wind remains a mixed bag: NNW (13.1%) and NW (8.6%) provide offshore windows, but SSW (10.0%) and S (8.3%) bring periods of onshore chop. Favorable wind sits at 46%, water temp has eased to 19.7°C, and air temps average 17.5°C with 2.92mm/day of rain. This is the turning point - start watching the synoptic charts for deep lows below New Zealand.
Average Spot conditions at The Island in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at The Island 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 The Island for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at The Island 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 The Island.