Conditions at Kvassheim in December
December: Midwinter Powerhouse
December delivers some of the heaviest conditions of the year. Average swell height sits at around 7ft (2.2m), average period is 8.9s, and the prevailing westerly storm track pumps energy into the Norwegian coast. The direct S/SSW/SW/WSW window is around 20% of the wave distribution, while W, WNW and NW swell combine for a lot of background size. Ideal offshore wind is slightly higher than in October and November at 19%, with promising N/NNE/NE/ENE windows between frontal passages, but the wind rose is still controlled by ESE/SE and NNW flows. Air averages 3.9°C with a min of -8.2°C and max of 10.1°C, water temp has fallen to 7.8°C, and precipitation is 6.35 mm/day. If you time the post-frontal clean-up with a solid SW swell, December can offer some of the most powerful, charging surf of the year, just be ready for serious North Sea conditions.
Average Spot conditions at Kvassheim in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Kvassheim 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 Kvassheim for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kvassheim 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 Kvassheim.