Aoshima Harbour Surf Forecast and Surf Report

Alright, grab a coffee, let’s see what’s cooking for Aoshima Harbour over the next couple of weeks.

Honestly, mate, it’s a pretty grim stretch of days ahead. The wind has it in for us, and the swell is mostly a mess. The biggest issue is the persistent onshore and cross-onshore wind – it’s just relentless, and it’s going to make a mess out of almost everything that rolls in.

The forecast kicks off on Saturday the 5th with an ENE breeze already blowing onshore at 12 mph. There’s a 6 ft swell from the ENE rocking up, but it’s wind-affected and just poor. The combined energy is moderate at 521, but the quality is non-existent. That theme keeps going through Sunday the 6th. We see the swell ramping up to 12 ft from the E by the afternoon, with a solid 10-second period and a combined energy of 2312, so there’s plenty of juice. But with 22 mph cross-onshore winds, it’ll be lumpy and dangerous – that’s expert-only territory, and even then, not appealing.

Monday the 7th is a bit of a tease. There’s an 8 ft swell from the E with a 10-second period, and the combined energy sits around the 1900 mark. Conditions are still cross-onshore, but by the morning the wind drops to 12 mph. It gets a "marginal" tag, so if you’re desperate, you might find a ripple, but it’s not the kind of day you’d tell your mates about.

The middle of the week (Tuesday 8th through Thursday 10th) stays poor. Swell drops and swings SE, but the wind keeps blowing onshore or cross-onshore. There’s a small window on Thursday afternoon where the wind goes light onshore at 6 mph, but it’s still marginal and the swell is only 5 ft from the NE with a short 7-second period. The energy is moderate at 511, but it’s just not worth a paddle.

By the weekend of the 12th and 13th, the wind finally backs off a bit. Saturday morning the 12th shows a clean, cross-offshore breeze from the S at 9 mph, with a 4 ft SSE swell and a period of 8 seconds. The combined energy is light at 290, but it’s clean. Still, the overall conditions are "marginal" at best. Then Sunday the 13th has a 3 ft E swell with a very long 14-second period and a combined energy of 428, but it’s blown out again by a cross-onshore breeze.

The real glimmer – and it’s faint – comes on Monday the 14th. There’s a 7 ft swell from the E, with a 9-second period and a combined energy of 1411. The word “marginal” is the best we get, but the wind is only a gentle cross-onshore. If you can find a corner that’s clean, this might be the pick of the bunch, but be ready for a choppy surface.

After that, it fades fast. The last interesting day is Thursday the 17th. The morning offers glassy conditions, with a tiny 3 ft ESE swell and a combined energy of only 191. The period is 9 seconds. It’s “ordinary” and surfable, but barely. The next morning, Friday the 18th, is glassy again with a 1 ft E swell and a long 12-second period. The energy is weak at 79. If you’ve got a longboard and no expectations, you might get a few knee-high waves.

The absolute standout, if you can call it that, is the Monday the 14th push of 7 ft E swell. It’s the biggest of the decent windows, and with the lighter wind, it beats everything else. The water temperature anomaly isn’t mentioned in a way I can confirm, so I’ll skip that. Crowds at Aoshima Harbour are only a concern *sometimes*, so you might have a bit of room. But honestly, this whole run is one for the die-hards. It’s not a kite-surfing showcase either – the wind is mostly onshore, not the strong sideshore you’d want for that.

Keep an eye on the glassy mornings late in the second week, but don’t get your hopes up. The surf just isn’t cooperating.

Rusty.

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