Conditions at Popov Island in September
September: Autumn Transition Begins
September marks a shift in the atmosphere. The average swell size stays small at 0.5m (1.5-2ft), with a 4.8s period, the shortest of the year, but the distribution begins to change. S (21%) and SSW (18%) are still the main swell directions, yet NNW/N swell and winds start to increase as the Siberian High builds. Ideal wind improves to 10%, and NW/NNW wind percentages, 15% and 10%, hint at the offshore winter pattern to come. Most surf remains tiny, but the increasing NW wind means the few S/SSW pulses that arrive are more likely to be clean.
Air temps cool to 17.5°C, water still warm at 19.2°C, and precipitation remains significant at 3.04mm/day. September is a month of slowly building potential.
Average Spot conditions at Popov Island in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Popov Island during September. 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 Popov Island for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Popov Island for September. 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 Popov Island.