Conditions at Juist in September
September: First Autumn Stirrings
The North Atlantic starts to wake up in September, and Juist notices. Average swell height climbs back to 3.3ft (1.0m) with the period rising to 5.6s, signalling the return of more organised, rideable windswell. The swell direction data shows NNW at 20.4%, NW at 13.7% and WNW at 12.3%, giving the north-facing beach its full winter-like exposure. There are more 3-5ft (1-1.5m) waves in the mix, especially from the W, WSW and NW sectors, and the first deep autumn lows can deliver short bursts of 5-6.5ft (1.5-2m) energy. Wind remains the main limitation. SW and WSW are common, though the ideal offshore wind percentage increases slightly to 7%. Water temperatures are still pleasant at 17.2°C, air averages 15.3°C and precipitation runs 2.63 mm/day. September is a month of potential: the swell is coming back, and if you can catch a morning with southerly offshore wind, there are real waves to be found.
Average Spot conditions at Juist in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Juist 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 Juist for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Juist 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 Juist.