Conditions at Mirleft in December
December: Consistency and Power at Their Peak
December is arguably the best month of the year at Mirleft. Average swell height is 6-7ft (2.0m), the period is a deep 12.9 seconds, and the wind is ideal for surfing 51% of the time - the highest score of any month. Swell directions are perfectly spread across the preferred window: NW and NNW each account for 32.3% of total energy, with WNW contributing another 12.4%. Combine that with a broad distribution of 1.5-2.5m (5-8ft) waves, and you have the recipe for long-period, lined-up, pumping surf.
The winter wind pattern favours surfers. SE winds are the most common direction at 17.3%, while NNW winds drop to 15.7%, a dramatic reduction compared with late spring. Add in ESE at 12.6% and a variety of S/SSW/SW/WSW flows, and offshore or cross-offshore conditions become the best bet. Air temperatures cool to 15.6°C, water sits at 18.1°C, and the 1.16 mm/day of rain keeps the coast green - but the ocean is doing the real talking. If you have only one trip to Mirleft, December should be at the top of the list.
Average Spot conditions at Mirleft in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Mirleft 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 Mirleft for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mirleft 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 Mirleft.