Conditions at Sylt in July
July: Peak Summer Flatness
July is the lowest point of the surf calendar in terms of quality. Average swell height is a modest 3.3ft (1m), but the average period drops to 5.4 seconds, the shortest of the year, so the ocean often looks like a choppy, wind-addled washing machine. The majority of the swell arrives from NW (21.5%), WNW (14.1%), WSW (13.8%) and W (12.9%), yet the height classes are dominated by sub-1.5ft (sub-0.5m) and 1.5-3.5ft (0.5-1m) waves. Onshore winds are at their annual worst: NW (14.3%) and WNW (12.7%) lead the wind rose, and the combined bad-wind quadrant of WSW-W-WNW-NW totals nearly 48%. Ideal offshore ENE-E-SE winds only show up about 16% of the time. With water temperature at its warmest, 18.1°C, air temps averaging 16.9°C and 2.31 mm/day of rain, the North Sea is better for swimming and SUP than serious surfing. If a summer swell does appear, it is short-period and mostly blown out. Save your energy for autumn.
Average Spot conditions at Sylt in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Sylt during July. 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 Sylt for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sylt for July. 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 Sylt.