Conditions at Lido di Ostia in May
May: Summer Calm Settles In
May signals the start of the summer doldrums at Lido di Ostia. Average swell height dives to around 2ft (0.6m) and the average period drops to 4.8s - the signature of weak, chop-driven windswell. Even though the west quadrant still accounts for a higher fraction of the wave directions (SW+WSW+W+WNW ≈ 53%), the heights are tiny: over half of all waves are below 0.5m. More importantly, the onshore wind machine cranks up: winds from SW, WSW, W, and WNW total 34%, while offshore easterlies shrink to just 14%. With ideal winds only 13% of the time, clean surf becomes a rare commodity. The sea warms to nearly 19°C and air temps average 18°C, so spring suits are fine - but you'll spend more time tanning than surfing. Any wave you catch will be small, soft, and often bumpy.
Average Spot conditions at Lido di Ostia in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Lido di Ostia 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 Lido di Ostia for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Lido di Ostia 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 Lido di Ostia.