Hanamizu River Surf Forecast and Surf Report

Alright, grab your board and let’s have a look at the forecast for Hanamizu River.

Honestly, the next week and a half is pretty flat and sad. There’s a long dry spell of nothing worth paddling out for. Starting from today, Saturday, right through until around the end of the first week of August, the swell is tiny—mostly 1 foot or less, with very weak wave energy (under 50 in the energy readings). The wind is usually cross-on or onshore, and the wave comment is “poor surf conditions” every single time. It’s a grim stretch. Some days do have glassy conditions, like Tuesday morning and afternoon, with a glassy surface and a tiny 1-foot swell from the SSW, but the energy is still weak (48 and 47) and the period is short (9 seconds). It’s not really surfable.

The first real glimmer of hope shows up on Monday, August 3rd, when the combined energy climbs to 128, but the swell is still only 2 feet and the wind is cross-shore with some chop. That’s more of a sign that things are waking up than a go-out. By Tuesday, August 4th, the swell builds to 2 feet, period stretches to 16 seconds, and energy hits 187. Still, it’s cross-shore and messy. Not quite there.

Now, the standout window is the weekend of August 9th. Saturday, August 8th, the morning brings a 4-foot SSW swell with a very long 16-second period and energy of 817. That’s a proper groundswell, and the wind is light and onshore? Actually, it’s a slight air and unknown wind state—could be glassy. The wave comment is still “marginal,” but that’s a big step up. By Sunday, August 9th, the morning swell hits 8 feet from the SSW, period 16 seconds, and the combined energy is 2664. That’s strong wave energy. The wind is light cross-shore from the ENE, which is actually pretty decent. The wave comment says “marginal” but with a score of 3/10, which is the best we get. Afternoon sees 8 feet from the S, energy 3007, with onshore wind, so the morning is your pick.

For a beginner, the 4 feet on Saturday morning is fine, but the 8 to 8 feet on Sunday is solidly in expert territory—too big for most. The long period (16 seconds) means these swells are groundswells, so they’ll hold up well at Hanamizu River, which is a beach/sandbar. Long period groundswells can break a bit straight at beach breaks, but with the size and energy, there’ll be some fun ones if you can handle the power.

Water temperature right now is 81°F, which is about 2°F warmer than the long-term average—not a big deal, just a touch on the warm side for the time of year.

So, the best on offer is the morning of Sunday, August 9th: 8-foot SSW groundswell, 16-second period, light cross-shore wind. That’s the one to circle on the calendar. Saturday morning is a smaller, more manageable option. Crowds are listed as “sometimes,” so expect a few heads out, but nothing crazy.

For the rest of the period? It’s a write-off until that August 8th-9th window. Hang tight.

Rusty.

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