Today's Surf Conditions at Serangan
Spot Conditions Map
Hover over the hourly chart columns to update the wind & swell direction overlays on the map.
Today's Surf & Wind Forecast (Hourly)
Loading forecast text...
Spot Overview & Description
Serangan, often called Turtle Island, offers a distinctive blend of convenience and character on Bali's east-facing coast. This wet-season staple draws consistent south swell, delivering a versatile mix of waves that range from mellow, shoulder-high rollers to more potent, sucky shacks when the swell kicks up. The setup is reef-based, breaking over dead coral and producing both lefts and rights across a range of tides — low, mid, and high all see action. Northwest wind is the golden ticket here, grooming the surface and turning Serangan into a reliable crowd-pleaser. While the vibe is decidedly laid-back, with a chilled warung scene perfect for post-session refueling, the lineup can get packed when conditions align. Access requires a brief security check onto the island, but the reward is a mellow atmosphere that suits intermediate surfers looking for a solid, accessible wave. A nearby rock jetty stays mostly out of the equation, so the waves remain unimpeded. Whether you're chasing a longboard-friendly glide or a punchy barrel, Serangan delivers when the wind and swell sync up.
Best Surf Season & Climatology
Best Surf Season (December - February)
This is the peak window at Serangan, driven by the northwest monsoon. Consistent offshore winds from the west and northwest deliver clean, groomed conditions 60-64% of the time. While the dominant swell comes from the SSW and SW—not the ideal E-SSE direction—the offshore flow transforms these long-period Southern Ocean groundswells into smooth, rippable waves. Expect average wave heights around 1.6-1.7m with periods of 12-13s, offering fun to pumping surf day after day.
Fair Surf Season (March & November)
These months represent the transition between monsoons. March still sees moderate offshore wind (48% ideal) with powerful 13.3s swell, but the trade winds begin to creep in. November marks the return of the monsoon with 31% ideal wind, after months of onshore slop. Wave heights average 1.6m, and while the swell direction remains south-oriented, the improving wind quality makes these months solid secondary targets.
Low Surf Season (April - October)
The southeast trade winds dominate from April through October, blowing directly onshore from the E-ESE-SE quadrant. Ideal wind plummets to 19% in April and further down to 0-3% from May through August. Although swell energy peaks during these months—averaging 1.9-2.2m with long periods over 14s from the deep south—the constant onshore wind wrecks wave quality, creating lumpy, choppy, and difficult conditions. Only rare light-wind windows or early mornings offer any refuge. September and October see a slight uptick in wind quality (3-13%), but conditions remain marginal.
Detailed Surf Information for Serangan
Detailed Surf Forecast
Access our detailed 8-day swell and wind forecast charts for Serangan with tidal graphs, period ranges, and daily forecast text summaries.
Swell & Wind Statistics
Explore historical swell consistency, wave heights, and offshore wind windows month-by-month, compiled from over 40 years of data.
Historical Surf Report
Browse the historical database archives to view past wave reports and understand spot climatology during specific years and months.





