Conditions at Grindavik in October
October: Storm Track Re-Engages
October is when the North Atlantic roars back to life. Average swell height jumps to 1.7m (5.6ft), and the period lengthens to 9.8s, with a clear shift back toward longer-period groundswell. The dominant swell directions are SSW/SW: SW at 15.9%, SSW at 12.3%, S at 10.2% and WSW at 9.3%, with a healthy SE/SSE contribution as low-pressure systems track close to Iceland. Many waves now arrive in the 1.5-2.5m (5-8ft) range. Offshore winds are ideal 20% of the time, with NNE the most common wind direction at 12.1% and NNW also well represented. This means clean windows can be found between passing fronts. Air temps cool to 5.0°C, water temps drop to 8.6°C, and precipitation rises to 4.21mm/day. When the synoptic pattern lines up, the combination of powerful SW groundswell and wind out of the north makes Grindavik one of the most exciting cold-water breaks in the North Atlantic.
Average Spot conditions at Grindavik in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Grindavik during October. 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 October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Grindavik for October. 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.