Surf forecastSpot statisticsHistorical report

Jeffreys Bay seasonal overview

Jeffreys Bay is a world-class surf destination renowned for its consistent swell and long, powerful right-handers. The best months for surfing here are typically from May to September, when ground swell dominates (85–90%) and the average swell size peaks around 2.8–3.0 meters. This period offers the most reliable waves, with clean, well-organized swells ideal for advanced surfers. Wind conditions, however, remain challenging year-round, with good offshore winds occurring only 15–22% of the time. The worst wind patterns are from October to April, when bad onshore winds prevail over 80% of the time, though ground swells still provide some rideable waves. The summer months (December–February) see slightly smaller swells (2.4–2.5m) and marginally higher wind swell influence, making conditions less consistent. While J-Bay delivers waves all year, the prime window is winter (June–August), when bigger, cleaner swells roll through despite the persistent wind struggles. Surfers should prioritize this season for the highest chance of epic sessions.

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Conditions at Jeffreys Bay in September

In September, Jeffreys Bay offers solid surf conditions with an average swell height of 3.0m and a consistent period of 12.0s, providing powerful, well-formed waves. The swell is predominantly from the SSW and SW directions, with a significant portion (over 75%) of waves exceeding 1.5m, including frequent head-high to double-overhead sets (2m+). This ensures quality, rideable waves for experienced surfers, though it can be challenging for beginners. Wind conditions are less favorable, with only 17% of days offering ideal offshore winds (light ENE to E). Onshore winds, particularly from the W and WSW, are common and can create choppy conditions, especially at higher speeds (20-50kph). The strongest swells coupled with lighter winds early in the day often provide the best windows for clean, hollow barrels. Overall, September delivers reliable, powerful surf but requires patience for optimal wind alignment.

Average Spot conditions at Jeffreys Bay 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 Jeffreys Bay 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 Jeffreys Bay for your next trip in September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Jeffreys Bay 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 Jeffreys Bay.

Swell with good wind

Swell with good wind by size