Conditions at Habitat 67 in December
December: Winter Returns and the Lines Die
December is a return to full winter at Habitat 67, with average air temperatures of -6.8°C and extreme lows near -41°C. The swell tables are entirely zero, 0.0m height, 0.0s period, and ice again becomes a major player on the St. Lawrence. Winds are dominated by W (15.1%) and WSW (13.1%), with the offshore quadrant contributing about 20.0%. The wind is actually stronger on average during December compared with summer months, but that doesn't matter without open-ocean swell. Light snow falls at 2.81 mm/day of precipitation equivalent, and the river surface is often too cold and too flat to even produce wind ripples. December earns its place in the 'best' season only because the long nights and active weather make you feel like waves might exist, but they don't.
Average Spot conditions at Habitat 67 in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Habitat 67 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 Habitat 67 for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Habitat 67 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 Habitat 67.