Surf forecastStatisticsHistorical report

8th Street Jetty seasonal overview

Best Surf Season (September - November)

As summer transitions to autumn, the North Atlantic begins to spin up more potent extratropical storms, and their long-period swell trains start marching toward the East Coast. September stands out as the month with the highest average period (8.3s) and a solid 1.1m average height, driven by a climatological peak in optimal swell directions from the east through southeast. Wind conditions are also favorable, with 40% ideal offshore flow from the west-northwest through southwest. October and November maintain this momentum, offering a compelling blend of size, period, and direction that consistently puts 8th Street Jetty in the firing line for clean, rippable waves.

Fair Surf Season (December - February & April - May)

The heart of winter (December through February) delivers the largest average swell heights (1.3m) and periods hovering around 7 seconds, thanks to powerful low-pressure systems tracking across the North Atlantic. However, the wind machine is less cooperative—offshore flow from the west-northwest and northwesterly quadrants occurs only 37-39% of the time, and a significant portion of the swell arrives from less-than-optimal southerly and southwesterly directions, degrading wave quality with onshore crumble. Spring (April and May) sees a drop in average swell height to 1.0-1.2m, but the wind becomes more reliable (37% ideal in May) and swell directions shift toward the more favorable eastern quadrants, making for cleaner, more playful conditions on a good day.

Low Surf Season (June - August & March)

During the summer months, the jet stream retreats northward, and the Atlantic storm track weakens significantly. Average swell heights bottom out at 0.8-0.9m with short periods around 7 seconds. While the wind is at its cleanest (45-50% offshore flow from the west-southwest through northwest), the vast majority of the swell is comprised of small, short-period windswell from the southeast and south—directions that are largely onshore and often lead to mushy, weak waves. March is a transitional month with average size (1.3m) but the lowest wind quality of the year (32% ideal) and a swell mix that leans too heavily toward the south and east, rarely aligning with the perfect offshore breeze needed for 8th Street Jetty to fire.

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Conditions at 8th Street Jetty in April

April: Spring Cleanup

April sees a slight drop in average swell height to 1.2m, but the period remains respectable at 7.4s. The swell direction shifts dramatically toward the east and southeast: E (15.3%), SSE (14.2%), SE (12.1%), and ESE (12.0%) dominate—all within or near the optimal window for 8th Street Jetty. This is a major improvement in swell quality. Wind becomes a bit more cooperative at 33% ideal, with SSW (9.8%) and WNW (9.4%) leading the offshore quadrant, but SW and W winds (14% combined) also contribute. Light to moderate WNW winds often accompany post-frontal high pressure, producing clean, rippable conditions. The combination of 1-1.5m E swell and an offshore breeze makes for some of the most user-friendly surf of the spring.

Average Spot conditions at 8th Street Jetty in April

Swell history for April

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

Wind history for April

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

Swell quality

Analyze the groundswell consistency at 8th Street Jetty during April. 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 8th Street Jetty for your next trip in April.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at 8th Street Jetty for April. 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 8th Street Jetty.

Swell with good wind

Swell with good wind by size