Conditions at Mirleft in January
January: The Roar of the Mid-Atlantic
January is the apex of Mirleft's winter swell window. Average wave heights push to 6-7ft (2.1m) with a period of 13.2 seconds, putting this month firmly in the powerful long-period category. The swell distribution is perfectly matched to the exposed northwest aspect: NW swell accounts for 37.3% of total energy, NNW for 28.3% and WNW for 9.5%, meaning the beach receives a near-constant diet of North Atlantic groundswell. A healthy slice of waves arrive in the 1.5-2.5m (5-8ft) range, with the occasional XL day over 2.5m (8ft+).
The wind is the wild card. NNW winds - directly onshore - still blow 20.6% of the time, while a significant SE/ESE component gives plenty of clean surface potential. When the wind works into the S/SSW/SW/WSW quadrant, conditions become world-class. The wind is ideal for surfing 47% of the time, which is a high number for this coast. Air temperatures hover around 14.5°C with water at 17.5°C, so a good 4/3 wetsuit remains part of the program.
Average Spot conditions at Mirleft in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Mirleft during January. 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 January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mirleft for January. 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.