
Surf Forecasts:
Hanamizu River surf forecast from 26 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 6PM (local time) - 1ft (0.3m), 13s period, SE swell with cross-offshore winds.
- Most powerful swell: Friday 31 Jul, 9PM (local time) - 3ft (0.9m), 6s period, SSW swell with 61 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 6PM (local time) - 1ft (0.3m), 13s period with SE swell.
Best Forecast Surf Conditions for Hanamizu River this week:
The surf forecast for Hanamizu River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 6PM. The primary swell is predicted to be 0.3m and 13s period with a secondary swell of 0.3m and 10s. Another secondary swell of 0.1m and 13s is also forecast. Another secondary swell of 0.4m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Hanamizu River in the next 16 days are 0.9m 6s and forecast to arrive on Friday (Jul 31) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 28th Jul) | 1ft (0.3m) 13s |
| Best Surf | 6PM (Tue 28th Jul) | 1ft (0.3m) 13s |
| Most Powerful | 9PM (Fri 31st Jul) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Right, folks, Rusty here. Gotta be straight with you – the next couple of weeks are a real mixed bag for the region. We’re looking at a long, quiet spell before things potentially fire up, but even then, it's not straightforward.
For the first week, it’s a write-off. From now until the end of July, and right through the first few days of August, there’s barely a ripple. We're talking tiny, weak swell with poor surf conditions day after day. The few moments of glassy conditions on July 28th and August 1st are just cruel teases – there's no size to go with them. You’re looking at a solid 8-day gap with absolutely nothing worthwhile to paddle out for.
Things start to stir around August 3rd. There is a pulse of energy coming in from the SE, with the combined energy climbing up, but it's still too small and messy. The real change is from August 4th onwards. The swell height slowly builds, and the period stretches out to a very long 16 seconds – that’s proper groundswell. Combined energy jumps up on the Tuesday morning, a sign the ocean is waking up.
Now, for the standout, and this is the one to circle on the calendar. Thursday, August 6th, on the morning at Hanamizu River, things really line up. We’ve got a solid 5ft groundswell from the SE, with a period of 16 seconds – that's a lot of energy pushing in. The wind is from the NNE at 19 mph, which blows cross-offshore and keeps the waves clean. It’s a sandbar setup, so that long period swell should wrap in and offer some proper, lined-up walls. This is a standout morning, but be warned: 5ft is getting into intermediate territory, and the longer-period swell will make the sets more powerful. Beginners should be cautious. The following morning, Friday August 7th, sees *more* size – 10ft from the SE – but that’s entering expert-only territory. Wind is still clean and cross-off, but that wave height is serious business.
The very end of the run on August 8th and 9th sees the swell absolutely max out. We’re looking at 13ft on the Saturday morning, with absolutely massive energy. That’s huge, and reports say it's predicted to be too big for this break. While the wind is moderate and cross-off, this is not a session for your average weekend warrior.
So here's the call: The best on offer is the Thursday morning (August 6th) at Hanamizu River. It’s the perfect height for decent waves without it being a washing machine for a competent surfer. Get it while it’s clean.
Signing off,
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Sun afternoon. Warm (max 28°C on Mon afternoon, min 24°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu afternoon. Warm (max 31°C on Fri afternoon, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SE 15 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SSW 4 | SSW 4 | SSW 5 | SSW 6 | S 6 | S 6 | S 6 |
Wave Graph | |||||||||||||||||||||
8 | 18 | 20 | 16 | 16 | 16 | 15 | 15 | 24 | 7 | 13 | 16 | 10 | 17 | 5 | 6 | 24 | 55 | 31 | 30 | 19 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross-on | cross-on | cross-on | glassy | cross-on | cross-off | on | cross-on | glassy | on | cross-on | glassy | glassy | on | cross-off | glassy | cross-on | cross |
High Tide | 4:44PM1.26m | 1:59AM1.31m | 5:07PM1.31m | 2:54AM1.37m | 5:29PM1.36m | 3:40AM1.42m | 5:51PM1.39m | 4:21AM1.46m | 6:13PM1.42m | 5:00AM1.48m | 6:35PM1.44m | 5:38AM1.47m | 6:56PM1.46m | ||||||||
Low Tide | 9:09PM1.09m | 9:39AM0.25m | 9:52PM1.04m | 10:16AM0.18m | 10:26PM0.97m | 10:50AM0.14m | 10:59PM0.90m | 11:21AM0.13m | 11:31PM0.83m | 11:50AM0.15m | 00:04AM0.75m | 12:19PM0.20m | 00:38AM0.68m | ||||||||
4:46 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — | 4:48 | — | — | 4:50 | — | — | 4:50 | — | — | |
— | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | |
mm | — | 5 | 4 | 1 | — | 4 | 2 | 2 | 1 | — | — | — | — | 3 | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 27 | 28 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 27 | 30 | 31 | 30 | 31 | 31 | 28 |
Feels °C | 30 | 31 | 31 | 30 | 31 | 30 | 29 | 29 | 29 | 30 | 29 | 31 | 29 | 28 | 32 | 33 | 35 | 34 | 35 | 34 | 33 |
Swell 1 Height (m) Direction Period (s) | SE 15 | SE 11 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SSW 8 | SSW 5 | SSW 8 | SSW 7 | SSW 7 | SE 10 | SSW 7 | SSW 7 | SE 9 | SE 10 | S 6 | SE 11 | S 6 |
8 | 18 | 16 | 14 | 13 | 14 | 15 | 15 | 24 | 6 | 13 | 16 | 10 | 4 | 5 | 5 | 3 | 4 | 31 | 4 | 19 | |
Swell 2 Height (m) Direction Period (s) | S 7 | SE 15 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSE 10 | SSW 8 | SE 9 | SE 9 | SE 9 | SE 12 | SE 9 | SE 9 | S 11 | — | SE 8 | S 8 | SSE 9 |
4 | 8 | 18 | 16 | 16 | 16 | 15 | 15 | 9 | 7 | 3 | 3 | 3 | 6 | 3 | 3 | 2 | — | 3 | 1 | 8 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | S 7 | SSE 14 | SE 14 | SE 14 | SSE 3 | SE 13 | SE 13 | SE 13 | SE 10 | SE 12 | SE 12 | SE 12 | S 8 | S 8 | SE 12 | S 8 | — | SE 11 | E 14 | SE 13 |
5 | 4 | 20 | 8 | 8 | 1 | 7 | 7 | 7 | 4 | 6 | 6 | 6 | 1 | 1 | 6 | 1 | — | 5 | 4 | 7 | |
Wind waves Height (m) Direction Period (s) | — | S 2 | — | — | — | ESE 3 | E 8 | — | — | — | — | — | — | SSW 7 | SSW 4 | SSW 4 | SSW 5 | SSW 6 | — | S 6 | — |
— | 1 | — | — | — | 2 | 5 | — | — | — | — | — | — | 17 | 5 | 6 | 24 | 55 | — | 30 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 41 | 43 | 10 | 69 | 41 | 62 | 12 | 43 | 59 | 41 | 77 | 69 | 77 | 77 | 103 | 104 | 112 | 10 | 12 | 101 | 69 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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Information about the Hanamizu River Surf forecast
The above surf forecast table for Hanamizu River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hanamizu River can be found by selecting the local surf guide option on the grey menu. Our Hanamizu River surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Hanamizu River) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Hanamizu River may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Hanamizu River is 1 km (1 miles) from Ninomiya. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Ninomiya. Ninomiya has rooms for a wide range of budgets as well as car hire and transport links.










