Murtosa seasonal overview
Best Surf Season (October - March)
The North Atlantic roars to life during the autumn and winter months, delivering consistent, powerful swell to Murtosa's WNW-facing shores. From October through March, deep low-pressure systems track across the North Atlantic, generating long-period waves from the WSW to NW that wrap beautifully into the bay. Average wave heights range from 2.0m to 2.6m with periods averaging 11-13s, often producing pumping conditions. Winter also brings a higher chance of offshore easterly winds, especially from E, ESE, and SE, keeping the faces clean. December and January peak with ideal wind frequencies near 50%, offering the best combination of size and shape.
Fair Surf Season (April & September)
Shoulder months like April and September provide a mixed bag. Swell heights drop to around 1.6-1.9m with periods of 10-11s—still rideable but less consistent. The wind becomes more variable, with ideal offshore conditions occurring only 25-29% of the time. Spring and early autumn can still deliver solid days when a late-season storm aligns with a lingering high-pressure system over Europe, producing glassy mornings and fun-sized waves.
Low Surf Season (May - August)
The summer months see a dramatic slowdown in Atlantic storm activity. Average swell heights fall to 1.4-1.5m and periods shorten to 8.5-9.8s, resulting in weaker, mushier surf. The dominant swell direction shifts northwesterly, with NW and NNW pulses providing the most energy, but the wind is problematic: the ideal offshore wind frequency plummets to 9-21%. Instead, strong northerly and north-northwesterly winds (up to 38% of the time in summer) blow directly onshore, chopping up the surf. Occasional small southwesterly swells can offer fun-sized waves if you catch a dawn patrol window before the seabreeze kicks in.
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Conditions at Murtosa in April
April: Lower Energy, but Still Fun
April marks the transition to spring, with average swell height dropping to 1.9m and period to 10.9s. The dominant swell directions remain NW (26.0%) and WNW (23.8%), but the energy is less consistent. Wave heights cluster in the 1-2m range, providing fun-sized surf for shortboards and grovelers. The ideal wind frequency falls to 29%, with offshore easterlies only 12% of the time. Northerly and northwesterly winds strengthen, with N (12.7%) and NNW (17.1%) combined at 30%, often creating bumpy, onshore conditions. However, low-pressure troughs can still spin up shorter-period WSW swells (3.2%) that offer peaky waves. Dawn patrols are key—catch the morning glass before the north wind picks up.
Average Spot conditions at Murtosa in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Murtosa during April. 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 Murtosa for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Murtosa for April. 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 Murtosa.
