Surf forecastSpot statisticsHistorical report

Green Bowls seasonal overview

Green Bowls in Indonesia is a consistent year-round surf spot with a strong dominance of ground swell, rarely affected by wind swell or flat spells. The best conditions for surfers are typically found between February and April, when the swell remains solid (1.5-1.6m) and the chances of favorable wind conditions peak at 45% in February—significantly higher than most other months. During this window, the swell is clean and powerful, with ground swell making up 92-100% of the waves. From May to October, the swell size increases (1.8-2.2m), but offshore winds become extremely rare (1-6%), making these months less ideal despite the larger waves. November to January offers a slight improvement in wind conditions (12-38%) but with slightly smaller swells (1.5-1.6m). Overall, February stands out as the prime month with the best balance of swell consistency, size, and manageable wind conditions, though early-season months like January and March are also decent alternatives for those prioritizing cleaner surf over pure wave height. The dry season (June-September) delivers the biggest waves but is plagued by onshore winds, making it more suitable for experienced surfers willing to compromise on wind quality.

Loading chart...

Conditions at Green Bowls in September

September at Green Bowls offers consistently solid surf with an average swell height of 2.1m and a strong average period of 14.8s, ensuring powerful, well-formed waves. The swell predominantly arrives from the SSW and SW directions, with the bulk of waves in the 1.5-2.5m range (62.34% combined), providing ideal overhead conditions for advanced surfers. Wind conditions are less favorable, however, with only 2% of the time being ideal for surfing. The predominant SE and ESE winds (over 60% of the time) blow at 10-30kph, which can create choppy or cross-shore conditions, though the spot’s sheltered location may mitigate some of this effect. Expect the best sessions early morning before winds pick up, with the most consistent swell energy from the south/southwest. Pack your step-up board—this is the season for powerful, barreling waves when the wind aligns.

Average Spot conditions at Green Bowls in September

Swell history for September

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

Wind history for September

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

Swell quality

Analyze the groundswell consistency at Green Bowls during September. 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 Green Bowls for your next trip in September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Green Bowls for September. 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 Green Bowls.

Swell with good wind

Swell with good wind by size