Conditions at Moneglia in September
September: A Spark of Autumn Energy
September is the first month of the transition, but it still feels like summer. Average swell is 0.5m (1.6ft), average period is 4.8s, and ideal north-wind windows arrive only 13% of the time. The SW direction is less dominant than in summer - dropping to 29.7% - while SSE and SE begin to contribute more, signaling the return of early-autumn Mediterranean storms. Most waves remain under 1m, although the share of 1-1.5m (3-5ft) and 1.5-2m (5-6.5ft) pulses starts to grow, especially later in the month. Water temperature is still warm at 22.4°C and air averages 21.5°C, so the warm humid air can occasionally produce an early-season thunderstorm swell. September is for well-timed sessions; the real energy is still a month away.
Average Spot conditions at Moneglia in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Moneglia 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 Moneglia for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Moneglia 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 Moneglia.