Conditions at Streedagh Strand in September
September: Autumn Awakening
September is when Streedagh starts to come back to life. The average swell height climbs back to 3.5ft (1.1m) and the average period improves to 10.2 seconds, giving the waves more push and shape. The WNW window is again dominant at 34.6 percent, W adds 19.5 percent, NW 17.5 percent and NNW 10.8 percent. More energy now sits in the 3-5ft (1-1.5m) range, with WNW alone contributing 11.4 percent in that band and another 5.8 percent in the 5-6.5ft (1.5-2m) range.
The wind rose is still messy, with WSW at 10.3 percent and W at 8.8 percent, but the SSE/SE offshore flow begins to strengthen with 8.6 and 6.7 percent respectively. The ideal clean surf percentage climbs back to around 26 percent. Water temperature holds at a pleasant 15.3°C and air temperatures average 13.7°C, making September a great transition month for surfers looking to beat the summer crowds. Precipitation rises to 3.34 mm/day as the autumn pattern takes hold.
Average Spot conditions at Streedagh Strand in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Streedagh Strand 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 Streedagh Strand for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Streedagh Strand 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 Streedagh Strand.