Conditions at Tywyn in June
June: The Doldrums Take Hold
June is the official start of Tywyn's summer slump. Average wave height bottoms out at 1.6ft (0.5m), and the average period drops to 6.6s, producing mostly small, sluggish surf. The swell rose is still dominated by WSW at 40.3 percent, with SW at 18.8 percent and W at 10.9 percent, but almost all of that energy sits in the 0-1m range. The wave heights that do exceed 5ft (1.5m) are negligible, accounting for only about 2 percent of the month. It is a period of ankle-biting waves, not Atlantic power.
Wind becomes the bigger obstacle. Onshore SW and WSW winds top the wind rose, and with W and WNW included, rough, choppy conditions rule over 40 percent of the time. Ideal offshore winds drop to a scarce 3 percent, so clean surf is the exception rather than the rule. The upside is a more pleasant environment: average air temperatures reach 13.5°C, water temp climbs to 14.9°C, and precipitation is moderate at 2.50 mm/day. June surf is for beginners, longboarders, and those just happy to be in the water.
Average Spot conditions at Tywyn in June
Swell history for June
Wind history for June
Swell quality
Analyze the groundswell consistency at Tywyn 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 Tywyn for your next trip in June.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Tywyn 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 Tywyn.