Conditions at Seinesodden in April
April: Smaller Swell, Still-Fresh Offshore Windows
April marks the first noticeable step down in energy. Average swell height falls to 4ft (1.2m), the mean period slips to 9.5 seconds, and the ideal wind percentage drops to 44%. The swell rose still favours the west side of the compass, with WSW at 23.5%, W at 16.6%, WNW at 12.2%, NW at 9.3% and NNW at 8.3%; even though the optimal W/NW direction is actually at its highest share of the year at 46.4%, the individual wave heights are smaller and the periods are shorter. Winds are more mixed than in winter: SE at 12.2%, ESE at 10.6%, but also SW at 10.0% and SSW at 9.6%. You can still find clean, fun 3-5ft (1-1.5m) surf when a low-pressure system brushes the coast, but the consistent late-winter pulse is fading. Air temperature averages -0.4°C, precipitation is lower at 3.97 mm/day, and water temperature creeps up to 4.9°C.
Average Spot conditions at Seinesodden in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Seinesodden 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 Seinesodden for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Seinesodden 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 Seinesodden.