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Conditions at Porthleven in June
June: Summer Doldrums Begin
June is officially the beginning of Porthleven's low season. Average swell height drops to around 4ft (1.2m), with an average period of 8.7s, so most surf is windswell and short-period swell rather than true groundswell. The wave rose is increasingly dominated by W (31.5%), WSW (21.3%), WNW (13.1%) and SW (9.6%), with most of the energy falling in the 2-5ft (0.5-1.5m) range.
The wind pattern becomes more mixed and variable. NNW (12.0%), W (11.1%), WSW (10.4%), WNW (10.0%) and SW (8.8%) are all prominent. The N/NNE/NE/ENE offshore quadrant is only around 12.3%, but ideal wind is still reported 23% of the time, reflecting many light morning land-breeze setups before the daytime sea breeze kicks in.
Water temperature climbs to 14.3°C, air averages 14.3°C, and rainfall is 2.03 mm/day. June surf is small and occasionally clean, best suited to longboards or funboards, with dawn patrol the surest way to beat the onshore afternoon wind.
Average Spot conditions at Porthleven in June
Swell history for June
Wind history for June
Swell quality
Analyze the groundswell consistency at Porthleven during June. 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 Porthleven for your next trip in June.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Porthleven for June. 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 Porthleven.