Conditions at Spiders in September
September: First Hints of Autumn
September is a transitional month and one of the better bets for escaping the summer doldrums. Average wave height is the lowest of the year at around 5ft (1.5m), but the average period jumps to 10.1s, showing that distant storms are beginning to organize in the North Atlantic. The swell direction is still mostly NNW - 74.0 percent - with NW adding 19.0 percent and a small 2.0 percent from WNW. Not ideal yet, but the trend is in the right direction. Wind quality remains summer-like, with 40 percent ideal; NNW and NW winds still dominate. Water temp is among the warmest of the year at 18.4C, and air temps are a pleasant 25C. While size is limited, September can deliver clean, playful waves that remind you why the autumn run-up is so special.
Average Spot conditions at Spiders in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Spiders 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 Spiders for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Spiders 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 Spiders.