Aoshima Harbour Surf Forecast and Surf Report

G’day, Rusty here. Looks like we’ve got a slow start on our hands for the next couple of days, but hang in there—there’s some serious juice building for the end of the forecast period.

Right now, the surf is pretty minimal. Saturday the 15th (that’s today) has a small, clean 3-foot easterly swell rolling into Aoshima Harbour, with a 10-second period and light glassy winds in the morning. The water’s sitting at 83°F, which is about average for this time of year. The combined energy is weak (235), so it’s more of a longboard cruiser than anything exciting. That glassy morning window is the only decent time—by afternoon, the wind swings cross-onshore and chops it up.

Sunday the 16th and Monday the 17th are pretty similar: small 3-foot east swell, but the winds are mostly cross-onshore or onshore, making conditions ordinary. Monday morning does have another glassy window with light northerly wind, but the swell’s still tiny. Tuesday the 18th and Wednesday the 19th look even worse—onshore winds and messy, short-period swell. Not worth paddling out.

We hit a bit of a lull in quality until the 24th of August. From the 21st, the swell starts to build, but it’s coming with cross-winds and thunderstorms, so it’s more of a messy, choppy mess than clean surf. Nothing to get excited about until the real standouts arrive.

Now, the standout window is Monday the 24th through Wednesday the 26th. Monday morning the 24th, Aoshima Harbour sees a solid 5-foot groundswell from the ESE with a very long 18-second period—that’s proper energy (1820). Winds are dead calm and glassy. This is a serious swell for experienced surfers; the long period and size will be too much for beginners. The break is a beach/jetty setup, so that long-period swell might wrap in a bit too straight for a beach break, but with clean conditions, it’s still going to be quality waves. Crowds are sometimes an issue here, so expect company.

Tuesday the 25th morning is even bigger: 7-foot ESE swell with a 13-second period, again glassy and calm. The combined energy is strong (1340). This is expert territory only—over 8 feet might be too much, but at 7 feet, it’s still big and powerful. Wednesday the 26th also has a solid 5-foot east swell with 12-second period and glassy winds in the morning (719 energy). That’s still very good, though the afternoon sees a moderate cross-offshore breeze that keeps it clean but a little wind-affected.

Beyond that, the end of August sees the swell drop back down to small, clean but unremarkable conditions. The 30th has a tiny 2-foot long-period swell (20 seconds!) with glassy winds, but at that size, it’s more for micro-sessions.

So, the pick of the bunch is Monday morning the 24th and Tuesday morning the 25th at Aoshima Harbour. Big, clean, powerful groundswell with perfect wind. Mark it in your calendar.

Rusty.

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