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Conditions at Rottnest Island in October
October: Swell Drops and Summer Winds Reassert Themselves
October is the classic transition month where winter's swell energy is still present but the wind quality begins to deteriorate. Average swell height eases to 7ft (2.2m) with a period of 12.8s - still plenty of long-period power. The wave rose is heavily focused on SW (48.7%) and WSW (12.2%), with SSW at 9.5%. The problem is the wind: S and SSW combine for 35.1% of observations, and the ideal offshore N/NNW quadrant accounts for only 7%. Strong S/SSW winds in the 20-40kph range are common, making the south-facing beaches increasingly lumpy and onshore. As spring progresses, the thermal low over the continent strengthens the sea breeze, so clean morning windows get narrower. Air temperatures warm to 17.1°C, water sits at 19.1°C, and rainfall is moderate at 1.11 mm/day. October rewards the early riser: dawn patrol with offshore NE/NW winds and fading winter groundswell can still be magic.
Average Spot conditions at Rottnest Island in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Rottnest Island during October. 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 Rottnest Island for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Rottnest Island for October. 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 Rottnest Island.