Conditions at Ervik in September
September: The Autumn Reawakening
September is the first real transition month of the surf season. Average swell height jumps to 4.3ft (1.3m), and period climbs to 9.3s, putting more push behind the lines. The wave direction distribution is broadly favourable: NNW at 14.8%, W at 14.6%, WSW at 12.6%, WNW at 11.7% and NW at 10.9% spread the energy well, with the optimal N/NW quadrant around 41%. Heights cluster in the 2-6.6ft (0.5-2m) range, so there is genuinely rideable, often solid, surf.
The wind regime also stirs. SSW at 14.0% and S at 9.2% combine with SW/WSW for an offshore total near 39%, while bad N/NW winds remain low at 13%. Ideal conditions reach 15%. The ocean is still warm from summer, with water temperature at 14.2°C, air at 11.7°C, and rainfall jumping to 6.23mm/day as autumn lows intensify. September is a sneaky-good month: warm rubber, autumn power and the first legitimately pumping Ervik days of the season.
Average Spot conditions at Ervik in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Ervik 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 Ervik for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Ervik 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 Ervik.