Conditions at Porto Katsiki in September
September: First Signs of Autumn Life
September is where the surf almanac starts to turn again. Average swell height is still only 1.6ft (0.5m) and period remains short at 4.3s, but the S/SSW/SW window has recovered to 13.8%, more than triple the summer low, and the first early autumn lows are capable of injecting S/SW swell into the Ionian. NW still dominates the rose at 37.2%, with WNW (12.8%) and WSW (11.3%) also present, so the background sea can be bumpy. Ideal offshore wind is 13%, but with the water still warm at 24.7°C and air at 24.1°C, early-morning offshore flows are becoming more reliable. Average precipitation jumps to 2.22mm/day, a clear sign of developing low pressure. The first fun 2-3ft (0.6-0.9m) sessions of the season become possible when a frontal system tracks through the Gulf of Lion and pushes S/SW swell down the length of the Ionian Sea toward Lefkada.
Average Spot conditions at Porto Katsiki in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Porto Katsiki 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 Porto Katsiki for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Porto Katsiki 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 Porto Katsiki.