Surf forecastStatisticsHistorical report

Santa Marinella seasonal overview

Best Surf Season (December - February)

The heart of winter delivers the most consistent swell to Santa Marinella’s south-facing shores. With average wave heights hovering around 0.9 to 1.0 meters and periods climbing into the 5-second range, you’ll find more frequent rideable conditions compared to the rest of the year. The North Atlantic’s storm track shifts south, feeding the Tyrrhenian Sea with pulses of S, SSE, and SW swell. Offshore winds from the north and northwest blow 11-12% of the time, creating clean, groomed faces—especially during high-pressure setups that deliver crisp N/NW winds. While the average isn’t huge, the combination of a solid south swell and a light offshore wind can produce surprisingly fun, punchy waves in the 1-1.5m range. Keep an eye on the NAO: a negative phase often funnels more cold fronts into the Mediterranean, ramping up surf potential.

Fair Surf Season (October - November, March)

The shoulder months offer a taste of winter’s energy without the full commitment. October and November see average swell heights of 0.7-0.9m with periods around 4.7-5.2s, while March maintains 0.8m and 5.1s. Swell directions are more variable, with S, SSE, and SW pulses still common, but the wind patterns become trickier. Offshore blows from N/NW are most reliable in November and March (approximately 10-11% ideal wind), but October can be plagued by onshore SE/SSE winds that blow 30% of the time. When the synoptic setup aligns—a deep low over the Gulf of Genoa with a trailing cold front—you can score clean, long-period swell from the SSW that wraps nicely into the bay. Expect periods of clean fun-sized waves mixed with windy, choppy days.

Low Surf Season (April - September)

From spring through early autumn, Santa Marinella goes into a deep surf slumber. Average swell heights drop to 0.5-0.7m, and periods shrink to 4.0-4.5s—typical of weak, short-period windswell. The predominant swell comes from S, SW, and WSW, but these are often accompanied by onshore winds from the same quadrants. Offshore wind conditions are rare, occurring only 7-9% of the time. The summer months (June-August) are especially flat and glassy in the mornings, but the only rideable waves are tiny micro-swell that might grovel on a log. April and May see slightly more energy from S and SSE, but the wave quality remains poor due to short periods and frequent onshore flow. For the dedicated surfer, these months are best reserved for travel, windsurfing, or enjoying the beach. The occasional thunderstorm or distant low can produce a brief spike, but consistency is lacking.

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Conditions at Santa Marinella in September

September: The Autumn Flicker

September shows tiny signs of life as the ocean begins to stir. Average wave height edges up to 0.6m with a period of 4.3s. Swell comes from S (14.4%), WSW (15.0%), SW (11.9%), and SSE (10.6%). The SE and SSE contributions increase slightly, offering more potential at Santa Marinella’s south-facing beach. Wind patterns remain summer-like but with a bit more variety: onshore S/SSE winds compose 16.3%, while offshore N/NNW winds total about 9%. Ideal wind is still low at 8%, but the frequency of light winds (0-10kph) is higher, meaning more glassy mornings. The first real cold fronts of autumn can arrive late in the month, bringing pulses of SSW swell with building energy. These fronts often have a brief post-frontal N wind window, allowing for clean 1m waves. However, the overall consistency is poor—September is a transitional month where you might score a fun session or two, but it’s still largely flat. Water temps remain warm (23°C), so a shorty is fine.

Average Spot conditions at Santa Marinella in September

Swell history for September

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

Wind history for September

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

Swell quality

Analyze the groundswell consistency at Santa Marinella 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 Santa Marinella for your next trip in September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Santa Marinella 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 Santa Marinella.

Swell with good wind

Swell with good wind by size