Surf forecastSpot statisticsHistorical report

Inside Lefts seasonal overview

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.

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Conditions at Inside Lefts in August

August at Inside Lefts delivers consistent, powerful surf with an average swell height of 2.0m and a strong 14.8s period, ensuring well-formed, high-quality waves. The dominant swell approaches from the SSW (44.6% of waves in the 1.5-2.5m range) and SW (26.1% in the same range), providing clean, steep walls ideal for advanced surfers. While wave heights below 1.5m are rare (under 3%), the spot frequently produces overhead to double-overhead conditions, with 23.5% of SSW swells reaching 2-2.5m and occasional bigger sets (0.6% over 2.5m). However, wind conditions are often challenging—only 9% of days offer ideal light offshore breezes (typically ENE to E under 20kph). The majority of sessions face SE to ESE winds (20-40kph, 65.8% combined), creating onshore chop, especially during stronger SE gusts (30-50kph, 37.6%). Early mornings may provide brief clean windows before winds pick up. Expect heavy, fast barrels when the swell aligns, but patience is key for optimal conditions between wind pulses.

Average Spot conditions at Inside Lefts in August

Swell history for August

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for August

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Inside Lefts during August. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Inside Lefts for your next trip in August.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Inside Lefts for August. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Inside Lefts.

Swell with good wind

Swell with good wind by size