Inside Lefts - surf spot statistics

Inside Lefts in Indonesia offers consistent year-round ground swells, with minimal wind swell interference, making it a reliable surf destination. The best months are from **April to June**, when ground swell dominance is at its peak (98-99%), swell size increases (1.4m to 1.8m), and wind conditions are relatively favorable (35-38% good winds). April and May stand out as the prime months, combining solid swell consistency with the highest likelihood of offshore or light winds. June follows closely, though wind quality slightly declines. The swell grows larger from **May to August**, with July and August seeing bigger waves (1.9m-2.0m), but wind conditions deteriorate significantly (only 9-21% good winds), making these months better for advanced surfers willing to endure cross-shore or onshore winds. **September to March** remains surfable, but the increasing frequency of bad winds (72-93%) and smaller swell size (1.4m-1.7m) reduce consistency. December to March still provides decent ground swell (82-93%), though wind conditions are less reliable (only 19-28% good winds). Overall, **April to June** delivers the best balance of size, consistency, and favorable winds for most surfers.

September at Inside Lefts offers solid surf conditions with a dominant swell from the SSW direction, accounting for over 50% of waves in the 1.5–2.5m range. The average swell height is 1.9m with a strong 14.6s period, ensuring powerful, well-formed waves ideal for advanced surfers. The most favorable wave heights (1.5–2.5m) are frequent, particularly from SSW and SW, delivering consistent, high-quality left-handers. However, wind conditions are often less than ideal, with only 7% of winds being surf-friendly. The majority of winds blow from the SE to SSE at 20–40kph, causing choppy or cross-shore conditions. While the swell quality is excellent, surfers should anticipate wind challenges, making early mornings or rare offshore wind days the best windows for clean surf. Overall, September is a strong month for waves, but patience with wind conditions is key.