Conditions at Katahama in June
June: Onshore Season Sets In
June brings the full arrival of the summer southwest monsoon in the region. Swell still comes from the south-southeast to east-southeast sector (SSE 16.0%, SE 13.3%, ESE 13.1%, E 3.7% - about 46.1% optimal), but the average height stays at 1.2m (4ft) and the period at 7.7s. The wind is the story: offshore winds from W/NW are almost absent (only 9.5% of the time), while WSW (16.4%), ENE (13.3%), E (12.4%), and SW (11.2%) winds blow onshore and cross-shore. This makes for the classic summer chop - waves have enough energy to be ridable, but the constant onshore texture makes them frustrating. The rare days with a solid ESE/SE swell and a morning land breeze can still produce fun surf, especially at higher tides. Water temperature jumps to 21.4°C, air temps average 22.1°C, and June is one of the wettest months with 8.34 mm/day of precipitation, courtesy of the East Asian rainy season (Meiyu/Baiu).
Average Spot conditions at Katahama in June
Swell history for June
Wind history for June
Swell quality
Analyze the groundswell consistency at Katahama 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 Katahama for your next trip in June.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Katahama 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 Katahama.