Conditions at Devil's Rock in December
December: Winter Prime Time
December is the most reliable month of the year at Devil's Rock. Average swell height is 7ft (2.1m) and period is 12.9s, while the ideal wind score tops out at 57%, the highest of the year. The swell distribution is the best all-around balance you'll see: NNW 31.7%, NW 27.9%, and WNW 12.0%, with W/WSW contributions starting to appear. That means the beach sees not just northwesterly groundswell, but a real share of the west energy it's built to handle. The wind rose also shows strong offshore-friendly components from E (13.7%), ESE (10.4%), and ENE (8.3%). Water temp is 17.6°C, air temp drops to 15.0°C, and precipitation is 1.42 mm/day. When a strong Atlantic storm sends pulse after pulse toward the Moroccan coast, this is the month to be there.
Average Spot conditions at Devil's Rock in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Devil's Rock 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 Devil's Rock for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Devil's Rock 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 Devil's Rock.