- Home
- ...North America
United States- Sumner Avenue
Conditions at Sumner Avenue in October
October: Fall Transition, First Real Groundswell
October is when the North Atlantic roars to life. Average swell height is up to 1.3m (4.3ft) with a period of 7.7s, and the spread is healthy: E (14.5%), ESE (13.1%), ENE (10.4%), SE (9.3%), SSE (8.7%) and S (8.0%) all contribute. The favorable S-ESE sector sits near 39%, but the bigger story is the return of northwesterly offshore winds - WNW (8.7%), NW (8.5%) and NNW (9.4%) now rival SSW/SW, and ideal wind is back to 28%. Strong extratropical storms start marching across the Atlantic, producing groundswell that wraps into this SSE-facing beach. Water temp is still pleasant at 18.5°C (65°F) and air averages 15.1°C (59°F). Precipitation averages 3.31 mm/day. October is a golden month.
Average Spot conditions at Sumner Avenue in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Sumner Avenue 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 Sumner Avenue for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sumner Avenue 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 Sumner Avenue.