Conditions at Grupuk in June
June: Powerhouse Swell, Brutal Onshores
June is a classic Indonesian dry-season month: huge energy, hostile wind. The average swell height climbs to 1.7m (5.5ft) and period peaks at 14.3s, with SSW and S directions combining for nearly 90% of the wave energy. More than 44% of the swell arrives between 1.5-2m and 13% in the 2-2.5m range, so when Grupuk gets a window it can be firing. Yet ideal wind drops to just 6%. The strong SE trade wind blows onshore nearly nonstop, making most of the month a blown-out battle. Only protected nooks or dawn sessions offer real hope.
Average Spot conditions at Grupuk in June
Swell history for June
Wind history for June
Swell quality
Analyze the groundswell consistency at Grupuk 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 Grupuk for your next trip in June.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Grupuk 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 Grupuk.