Serangan - surf spot statistics

Serangan, Indonesia, offers consistent surf year-round, primarily fueled by ground swells, which dominate from January through December, rarely dropping below 92%. The best months for surfers are during the dry season, particularly from June to September, when swell sizes peak, averaging 2.0–2.2 meters. These months have nearly 100% ground swell contribution, ensuring clean, powerful waves, but they come with a trade-off: wind conditions are predominantly unfavorable (98–100% bad winds), often blowing onshore due to monsoon influences. For those prioritizing wind conditions over size, January and February provide more favorable winds (54–57% good wind days) while still maintaining solid 1.6-meter swells and a high ground swell presence (92%). March and December also offer decent wind conditions (46% and 47% good winds, respectively), but the swell size is slightly smaller (1.5 meters). April and November transition into worse wind conditions (82% and 78% bad winds), though ground swells remain strong. The least desirable months for surfing are May through October, when wind conditions are almost entirely unfavorable (97–100% bad winds), despite the larger swells. Advanced surfers may still find opportunities in these bigger but choppier conditions, but for most, the sweet spot is early in the year when winds and swells align better.

In April, Serangan offers surfable conditions with an average swell height of 1.6m and a long-period swell averaging 14.3s, which typically produces clean, well-formed waves. The majority of the swell comes from the SSW and SW directions, with the highest frequency of waves in the 1-1.5m and 1.5-2m ranges, ideal for intermediate to advanced surfers. Larger sets (2-2.5m) occur occasionally, adding variety for those seeking more powerful waves. Wind conditions are a mixed bag—only 18% of the time are they ideal for surfing, with the most favorable being light offshore or cross-shore breezes. However, ESE winds (moderate to strong) are common, potentially creating choppier conditions, especially when speeds exceed 20kph. Early mornings often provide the cleanest sessions before winds pick up. Overall, April delivers consistent, quality waves, though wind management is key for optimal sessions.