Keramas - surf spot statistics

Keramas in Indonesia is a world-class right-hand reef break that offers consistent, powerful waves with a strong emphasis on ground swells throughout the year. The best months for surfing at Keramas are typically from May to September, when the swell is most reliable, and the wave size is at its peak. During these months, ground swells dominate with 97-99% consistency, and the mean swell size ranges from 1.7m to 2.0m, providing hollow, barreling waves that advanced surfers seek. However, wind conditions during this period are less favorable, with bad winds (onshore or cross-shore) occurring 92-96% of the time, which can sometimes make the waves messy, though the power of the swell often overrides this. The early season months of January and February also offer solid conditions, with ground swells at 88% and slightly better wind conditions (49-53% good winds). The swell size averages 1.5m, making it more accessible but still high-performance. March and December are transitional months with decent swell consistency (90-93% ground swells) but increasingly unreliable winds (bad winds at 61%). April and November see strong ground swells (96-97%) but suffer from poor wind conditions (81-83% bad winds), reducing surf quality. The worst months for favorable wind conditions are May through October, when good winds drop below 10%, but the sheer power and consistency of the swell still attract experienced surfers willing to trade wind quality for wave size and shape. Overall, if you prioritize clean, powerful waves, the peak season from May to September is ideal despite the wind challenges, while January and February offer a good balance of swell and slightly more favorable winds.

In May, Keramas offers consistent surf with an average swell height of 1.7m and a strong 14.6s period, indicating powerful, well-spaced waves. The swell predominantly comes from the **SSW and SW directions**, contributing to **75% of waves in the 1.5-2.5m range**, ideal for intermediate to advanced surfers. Smaller waves (0.5-1.5m) are less frequent but present, mainly from the **S and SSE**. Wind conditions are the main challenge, with **ESE to SE winds (15-30kph) dominating 51% of the time**, often creating onshore chop. However, **7% of days** see light offshore winds (WSW to NW under 20kph), offering clean, groomed waves—prime time for surfers. Expect hollow, fast sections at Keramas in May, but scout early sessions or wait for rare wind lulls for optimal conditions. Windswell is negligible; the spot relies on solid groundswells.