Surf forecastStatisticsHistorical report

Il Porto seasonal overview

Best Surf Season (October - March)

During these months, the Mediterranean springs to life as extratropical cyclones and frontal systems sweep across the basin, generating consistent S, SSW, SW, and WSW swell that aligns perfectly with Il Porto's south-southwest exposure. Average wave heights climb to 0.8-1.0m with periods averaging 5.0-5.2s, often pushing punchy, rideable waves. Meanwhile, the frequency of offshore winds from N, NNE, NE, and ENE peaks at 12-13% of the time—especially during high-pressure setups over central Europe—creating clean, glassy conditions. This is the prime window for scoring fun, rippable surf, with occasional bigger swells (1.5-2.5m) firing when storms align.

Fair Surf Season (April - May & September)

Transitions bring a mixed bag. In April and May, the North Atlantic storm track weakens, and average swell heights drop to 0.6-0.7m with shorter periods around 4.5-5.0s. While S/SW swell still arrives, it's often smaller (mostly under 1m) and suffers from increasing onshore winds as thermal low pressure builds inland. September sees a similar pattern: the first autumn storms reawaken the swell window, but periods remain short (4.3s average) and wind consistency is spotty. Look for early mornings with NNE breezes to catch clean, waist-high waves—these months require patience but can deliver surprising gems.

Low Surf Season (June - August)

Summer in the Med means high pressure dominance, minimal storm activity, and a severe drop in swell energy. Average wave heights bottom out at 0.5m with periods of 4.0-4.2s—the definition of choppy, micro surf. The prevailing winds shift to S, SSW, SW and WSW (onshore) due to sea-breeze patterns, ruining what little wave shape exists. Offshore wind frequency plummets to just 6-7%, making clean waves extremely rare. Most days are flat or merely thigh-high slop. Unless you're a grom with a foamie, your best bet is to save the wax for the autumn return.

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Conditions at Il Porto in May

May: Small but occasional gems

May marks the onset of summer lull with average swell height dropping to 0.6m and period to 4.5s. The swell direction profile shows a high percentage of small waves: S (16.9%) and WSW (15.4%) lead, but over 60% of the energy is under 0.5m. Only 9% of the time does the wind blow from ideal offshore directions (NNE 6.2%, NE 4.4%). Onshore SSE (9.9%) and SE (8.5%) increase, along with WSW (6.5%) wind, which is onshore. While a rare late-season storm can deliver a 1-1.5m SSW pulse, most days are thigh-high or less. The wave period is often below 5s, resulting in weak, crumbly waves. Dawn patrol is essential—catch the brief offshore breeze before the sea breeze destroys it.

Average Spot conditions at Il Porto in May

Swell history for May

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for May

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Il Porto during May. 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 Il Porto for your next trip in May.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Il Porto for May. 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 Il Porto.

Swell with good wind

Swell with good wind by size