Conditions at Serangan in May
May: Trades Take the Wheel
May is when late-season swells get serious but the surface gets messy. Average wave height jumps to 6ft (1.8m) and period to 14.1s - long-period, powerful Southern Ocean energy. The swell direction spreads through SSE/S/SSW, with S at 31.0 percent, SSW at 44.8 percent, SSE at 11.4 percent, and SW another 3.8 percent - so only about half the energy sits inside the preferred SSW/SW window. The problem is onshore ESE trades howling at 57.3 percent, with SE at 18.7 percent and E at 14.8 percent; ideal offshore flow plummets to just 3 percent. The water cools slightly to 28.8°C and precipitation drops to 2.40 mm/day. There are clean moments, usually at dawn, but for most of May Serangan is a wind-affected shadow of its wet-season self.
Average Spot conditions at Serangan in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Serangan during May. 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 Serangan for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Serangan for May. 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 Serangan.