Conditions at Kilcummin in December
December: Winter Solstice Swell
December is peak winter at Kilcummin. Average swell reaches 1.8m (6ft) and the mean period is 12.3s, so the Atlantic is pumping with long-period energy. W (25.7 per cent) and WNW (22.6 per cent) dominate the wave rose, but NW and NNW combine for a useful 12.9 per cent, giving the preferred N-NNW-NW share just over 13 per cent. The height distribution shows lots of waves in the 1.5-2m and 2-2.5m (5-8ft) classes, especially from the W-WNW direction, so there is real power to work with. Ideal wind is 37 per cent, one of the best of the year, and the S-SSW-SW offshore quadrant totals about 31 per cent - a great combo for a north-facing break. Air temperature averages 7.7°C, water temp is 9.0°C, and precipitation is heavy at 5.21mm/day. This is no place for the faint of heart: maximum rubber, a quiver of step-ups, and a keen eye on the charts for the next Atlantic depression.
Average Spot conditions at Kilcummin in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Kilcummin 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 Kilcummin for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kilcummin 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 Kilcummin.