Uluwatu - surf spot statistics

Uluwatu, Bali, is a world-class reef break with consistent year-round swell, predominantly powered by ground swells (90%+ of the time). The best months for surfing here combine solid swell size with favorable wind conditions. From April to October, the swell is most reliable, peaking in June, July, and August with mean swell heights of 2.0–2.2m, ideal for advanced surfers. However, wind conditions vary significantly—April, September, October, and November offer the best balance, with good offshore winds occurring 51–76% of the time. October stands out as the prime month, with 74% good wind conditions and a solid 1.8m average swell. The dry season (May–September) brings bigger waves but often suffers from less ideal winds (only 21–31% favorable in peak swell months). Conversely, November and March provide decent swells (1.5m) and better wind setups, making them good alternatives. December to February sees slightly smaller swells (1.5–1.6m) and the worst wind conditions (78–79% onshore), though ground swells remain dominant. For the best all-around experience, target April, September, October, or November—when swell consistency, size, and wind align most favorably.

August at Uluwatu delivers consistent, powerful surf with an average swell height of 2.2m and a long-period groundswell averaging 15.1s, ensuring well-defined, high-quality waves. The dominant swell directions are SSW and SW, contributing 63% of waves between 1.5m and over 2.5m—ideal for experienced surfers seeking hollow, barreling sections. Smaller swells (1-1.5m) from the S and SE appear occasionally but are less influential. Wind conditions are the main variable, with ESE/SE winds (10-30kph) prevailing 72% of the time, often creating onshore chop. However, 26% of days see lighter winds (0-10kph) or optimal offshore flow, typically in the mornings. While wind can be hit-or-miss, the swell consistency and power make August a prime month for advanced surfers prioritizing wave quality over perfect conditions. Expect crowded lineups when winds align.