Conditions at Crab Island in October
October: The Roar Is Back
October marks the real start of the high season at Crab Island. The North Atlantic begins to roar as the jet stream strengthens and extratropical storms deepen, pushing the average swell height up to 6ft (1.8m) with an average period of 10.8 seconds. W dominates the swell rose with 29.5%, WSW 17.1%, WNW 17.5%, and NW 4.5%, while waves in the 1.5-2.5m (5-8ft) range become increasingly common. The first XXL events of the season are not far away.
The wind remains the usual headache: ideal wind is 17% and offshore ENE-to-SE flow is 21.0%, but the onshore WSW-W-NW sectors still come in at 29.6%. Still, October often delivers classic shoulder-season conditions, with high pressure to the east producing crisp offshore mornings and solid W/WNW groundswell. Water temps are a pleasant 13.8°C, air averages 11.5°C, and precipitation is on the rise at 3.94mm/day. This is the month to start clearing your schedule.
Average Spot conditions at Crab Island in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Crab 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 Crab Island for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Crab 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 Crab Island.