Conditions at Agger in December
December: Big Swells and Winter Darkness
December closes the year with serious power. Average swell height is 6-7ft (1.8-2.1m), period is 7.5s, and the biggest waves of the year become more frequent. W, WNW, WSW and NW swells dominate, with 1.5-2.5m waves common and over-2.5m waves showing in nearly every westerly direction. The trade-off is the wind. WNW through WSW onshore winds blow about 35% of the time, and offshore ENE-SE winds hold at 22.5%, so you need to pick your days. Air temperatures average 5.3°C, water temp is 6.4°C, daylight is short and precipitation is 3.19mm/day. This is the month for thick hooded suits, dark storm skies and powerful, heaving North Sea peaks; when the forecast flips easterly, the quality can be spectacular.
Average Spot conditions at Agger in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Agger 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 Agger for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Agger 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 Agger.