Conditions at Imsouane in December
December: Winter Solstice Swell
December is Imsouane at full strength. The average swell height is 2.2m (7ft+) and the period extends to 12.9s, right in the powerful long-period range. The direction tells a slightly more complicated story: NNW remains the biggest player at 31.3%, but NW at 23.5% and WNW at 10.7% are close behind, and there is a noticeable W component at 2.2% plus WSW/SW energy compared to earlier months. That added west and south in the mix is a big deal for the spot - it is the most direct swell window the bay sees all year. The wind is a bit less perfect than in summer, with ideal conditions 58% of the time; the NNW at 12.2% and NNE at 12.4% offshore flows still dominate, but E/ESE/SE winds become more common, and those directions are not the preferred offshore regime for Imsouane. Air temps average 16.6C, water temp is 17.4C, and precipitation is 1.42mm/day. If you want oversized, clean winter waves, this is the month to be on standby.
Average Spot conditions at Imsouane in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Imsouane 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 Imsouane for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Imsouane 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 Imsouane.