Conditions at Playa de San Juan in January
January: Midwinter Power Meets the North-Easterly Curse
January is a serious month for surf size at Playa de San Juan. The average swell height comes in at 1.6m (5ft) with a mean period of 12.7s, placing it firmly in the powerful long-period range. The wave rose is packed with 1-2m (3-6ft) surf, led by NNW at 30%, with NNE at 19.7% and N at 13.7%. That is a good setup for this NNE-facing beach; when a low-pressure system parks itself over the western Mediterranean, the lines arrive with real push and shape.
The catch remains the wind. Offshore flow from the southerly quadrant is present only around 8% of the time, while NNE and NE winds combine for more than 42% of observations. Those are directly onshore and ruin the surface. Air temperatures hover near 17.6°C, the sea is 18.7°C, and precipitation is moderate, so the rare clean dawn patrol with a S/SW breeze will be cold but well worth it.
Average Spot conditions at Playa de San Juan in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Playa de San Juan 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 Playa de San Juan for your next trip in January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa de San Juan 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 Playa de San Juan.