Conditions at Spiders in December
December: Midwinter Peak Conditions
December caps the year with the most consistent setup at Spiders. Average surf height is 6.9ft (2.1m), average period is a strong 12.9s, and the ideal wind score is the highest of the year at 59 percent. The swell window is also the widest: while NNW and NW remain large at 31.7 percent and 27.9 percent respectively, the WNW/W/SW/WSW combination reaches nearly 15 percent, giving the spot a more direct and powerful west swell component than at any other time. This is the classic Moroccan winter pattern - cold fronts sweeping the North Atlantic, low pressure near the Azores, and easterly continental winds keeping the ocean clean. Air temps drop to 15C and water temp falls to 17.6C, but the trade-off is world-class, long-period surf. December is prime time at Spiders.
Average Spot conditions at Spiders in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Spiders during December. 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 Spiders for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Spiders for December. 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 Spiders.