Oceanside Harbor Surf Forecast and Surf Report

G’day, Rusty here. Let’s break down the waves for Oceanside Harbor.

Right off the bat, this stretch looks pretty grim. For the first week and a half, there’s almost nothing worth your time. The water is sitting at an unusual 74°, which is much warmer than usual for this time of year—good for a quick dip, not much else.

Monday the 24th and Tuesday the 25th are flat, with poor conditions and tiny swells of 2ft to 3ft from the SW. The combined energy is weak to moderate (340–437), and the period is long—16 to 17 seconds—meaning those are long-period groundswells. At a beach/jetty setup like this, that long period will cause the waves to break too straight and won’t form well. Wednesday the 26th gives a slight bump to 5ft from the S, with moderate energy (900), but the wind turns cross-onshore, making it choppy. Still only marginal. The same story continues: small and messy swell with onshore or cross-onshore winds through the end of August. Periods stay long (11–19 seconds), but the onshore flow ruins the shape for a beach break. Honestly, this is more interesting for kite surfing than paddle surfing.

The morning of Friday the 4th of September shows a bit more swell at 3ft from the SSW, with a 17-second period and moderate energy (686). The wind is light and onshore, so it’s still messy. But the afternoon of the 4th is the first real standout. Swell grows to 4ft from the SSW, with a very strong combined energy of 1028, and a 17-second period. That’s a true groundswell. The cross-onshore breeze holds it back from perfection, but the energy is undeniable. The following morning, Saturday the 5th of September, is your best call of the entire outlook. Swell is 4ft from the SSW, 16-second period, with moderate-to-strong energy (774). The wind shifts to a light cross-offshore from the NNW, which will clean up the surface nicely. The forecast says “expect very good surf conditions.” For Oceanside Harbor, that’s your window. The long period might make it a bit straight at the beach, but with clean conditions and solid energy, it’s worth paddling out. That afternoon stays clean with light winds, too.

From Sunday the 6th onward, it drops off again—smaller swell, moderate to fresh cross-onshore winds, and poor conditions. The Tuesday the 8th sees a 3ft SSW swell with a 14-second period and moderate energy (568), but the wind stays onshore.

So, if you’ve got patience, aim for Saturday morning, the 5th of September. That’s the only clear standout. The rest is a waiting game.

Rusty

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