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.

April at Keramas offers decent surf conditions with a good balance of swell and wind patterns. The average swell height is 1.5m, supported by a long 14.3s period, which translates to powerful, well-spaced waves—ideal for experienced surfers. The majority of swell comes from the SSW and SW directions, with a notable distribution of waves in the 1.5-2m range (30.93% from SSW). While smaller waves (0.5-1.5m) are frequent, there’s enough energy in the 1.5-2.5m range for solid sessions. Wind conditions are mixed, with ideal offshore or light winds occurring only 19% of the time. The predominant winds are easterly (E, ESE, SE), often blowing 10-30kph, which can create choppy or cross-shore conditions, especially in the afternoons. Mornings tend to be cleaner before the trades pick up. For surfers, the best windows will be during lighter wind periods or when swell direction aligns with the break’s orientation. Overall, expect powerful, fast waves with variable wind interference—worth monitoring daily for optimal sessions.