Conditions at Grindavik in August
August: Summer Fade, First Hints of Autumn
August remains in the low surf season, but the first signals of autumn are visible in the data. Average swell height is 1.1m (3.6ft), and the average period is 8.4s. SW swell is again dominant at 25.5%, backed by SSW at 16.4%, S at 10.0% and WSW at 11.3%. Most waves are in the 0.5-1.5m (1.6-5ft) range, though a few larger 2-2.5m (6.6-8.2ft) pulses start to appear from the SW. Offshore winds remain at a summer-high 25% ideal time, courtesy of frequent NNW and NW winds at 15.0% and 8.5% respectively. The water is at its warmest of the year around 11.7°C, air temps average 10.5°C, and precipitation edges back up to 3.67mm/day. This is a great month for clean, playful waves, with the first hint of bigger things to come in September.
Average Spot conditions at Grindavik in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Grindavik during August. 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 August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Grindavik for August. 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.