Conditions at Dunmoran Strand in December
December: Midwinter Giant
December is the heart of the midwinter season. Average swell height pushes up to 2.5m (8ft) and average period reaches 12.1s, so the Atlantic is consistently delivering heavy, powerful groundswell. The swell rose is led by W (12.1%) and WNW (11.9%), with NW (7.7%) and NNW (8.5%) giving the beach more direct north-westerly energy. The wind statistics are the harshest of the year: only 24% of the time is the wind offshore from the SSE/S/SSW/SW quadrant, meaning you'll have to battle plentiful storm fronts, rain and variable onshore winds to find the good sessions. Water temperature has dropped to 10.4°C and air temps average just above 7°C, so winter rubber is essential. But when a strong high settles in behind a passing low, the ocean can flatten out into clean, cold, glassy lineups-and those days can deliver the biggest, heaviest and most memorable waves of the year.
Average Spot conditions at Dunmoran Strand in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Dunmoran Strand 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 Dunmoran Strand for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Dunmoran Strand 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 Dunmoran Strand.