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Conditions at Sennen Cove in January
January: A North Atlantic Heavyweight
The new year starts with Sennen Cove in peak winter form. Average swell heights run 8ft (2.5m) with periods of 11.7s, putting the beach squarely in powerful long-period territory. The dominant swell directions are W (17.7%) and WSW (12.8%), with a solid WNW (6.3%) and NW (2.6%) component that lines up well with the beach's northwest exposure. While pure W swells are not perfectly aligned, the long periods allow a lot of energy to wrap into the bay, and any NW/NNW pulse will have Sennen absolutely pumping. The catch is wind: ideal offshore conditions (S, SSW, SW, WSW) occur only 8% of the time. Frequent SW and WSW winds are offshore, while W and WNW winds are onshore and ruin shape. With air temps around 9.3°C, water at 10.1°C and 3.45mm of rain a day, winter rubber is essential. Watch the charts for low pressure passing north and a brief southerly wind window to score the standout session.
Average Spot conditions at Sennen Cove in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Sennen Cove 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 Sennen Cove for your next trip in January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sennen Cove 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 Sennen Cove.