Conditions at Grindavik in April
April: The Transition to Spring
April is where the first real drop in energy shows up. Average swell height falls to 1.7m (5.6ft), and the average period slips to 9.8s. Swell direction is still heavily SSW/SW, with SW at 17.9%, SSW at 12.6%, S at 10.1% and WSW at 11.6%; the S/SW quadrant actually accounts for a higher percentage of the total than in winter, but more of that energy sits in the 1-2m (3.3-6.6ft) range. This is fun, rippable surf rather than heavy, firing surf. Ideal offshore winds increase to 17% of the time, and NNW winds become more common at 9.5%, offering cleaner surfaces. Air temps rise to 3.4°C, water temps warm slightly to 6.2°C, and precipitation drops to 3.26mm/day. April is a true shoulder month: still capable of a late-season long-period pulse, but generally smaller, cleaner and more manageable.
Average Spot conditions at Grindavik in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Grindavik 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 Grindavik for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Grindavik 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 Grindavik.