Surf Forecasts:
Hanamizu River surf forecast from 25 Jul 2026:
- Most powerful swell: Tuesday 28 Jul, 6AM (local time) - 1.5ft (0.4m), 9s period, SSW swell with 26 kJ wave energy.
Best Forecast Surf Conditions for Hanamizu River this week:
The most powerful waves expected at Hanamizu River in the next 16 days are 0.4m 9s and forecast to arrive on Tuesday (Jul 28) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Jul 29) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Tue 28th Jul) | 1.5ft (0.4m) 9s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the menu for the next couple of weeks.
To be straight with you, the first week is a bit of a write-off. We're looking at a long, quiet stretch from Saturday the 25th of July all the way through to Sunday the 2nd of August. The surf is tiny, with heights barely scraping 1 ft and the combined energy is weak, barely hitting double digits. Winds are mostly cross-onshore and the conditions are just flat out poor. You’re better off leaving the boards in the shed for this one.
Things start to show a pulse of life on Monday the 3rd of August. We've got a long-period groundswell starting to push in from the SE, with a period of 17 seconds. The combined energy jumps to a moderate 301. The swell height is still only 2 ft on Monday morning, but it's clean with light cross-shore winds. This is a real tease, though, because the wind gets messy in the afternoon.
The real standout, and the only time I'd really get excited, is shaping up for Tuesday the 6th of August. Clean, offshore winds from the NNE at 19 mph are going to be groomed the swell coming from the SE. The swell is a solid 8 ft to 10 ft with a very long 18-second period, producing strong wave energy (3851 to 5583). This is proper groundswell. For a beach/sandbar setup like Hanamizu River, that long period can make it break a bit straight, so keep your wits about you. This is expert territory at that size. The wind is clean, so you’ll be looking at some proper, lined-up walls.
The 7th of August sees a massive pulse of energy, but it’s a write-off. The swell is predicted to be too big for the break at 15 ft to 16 ft, and even with clean wind, it’s a no-go. The following days are just a messy, blown-out combination of big, shifting swell and howling onshore winds.
So, the call is clear. The first week is a dud. The second week has a window of pure, clean, powerful surf on the 6th of August. That’s the one to circle on the calendar. It’s still a week and a half away, so keep an eye on it, but as a long-range prospect, it’s a beauty.
Stay wet,
Rusty.
Short Range ForecastHeavy rain (total 28mm), heaviest during Sun night. Warm (max 30°C on Sat morning, min 24°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Tue afternoon. Warm (max 27°C on Wed morning, min 24°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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 10 | SE 10 | SSE 15 | SE 15 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SSW 9 | SE 10 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 8 | S 8 | S 7 | S 3 | SE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 15 | 15 | 22 | 8 | 18 | 20 | 16 | 16 | 16 | 26 | 15 | 14 | 22 | 13 | 10 | 10 | 6 | 4 | 4 | 5 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross-off | cross-on | cross | cross-on | on | glassy | cross | cross | cross-on | glassy | cross-on | glassy | glassy | on | cross-on | cross-off |
High Tide | 4:24PM1.19m | 00:48AM1.28m | 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 | ||||||||
Low Tide | 7:57PM1.13m | 8:56AM0.32m | 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 | ||||||||
 |  |  | | | |  | | | | | |  | |  | | | | | |  | |
 | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — | 4:48 | — | — | 4:50 | — | — |
 | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:49 | — | — | 6:47 | — |
mm | — | 6 | 3 | 1 | 3 | 11 | — | 2 | 2 | — | 5 | 3 | 1 | — | — | 1 | — | — | — | — | 3 |
Temp °C | 30 | 29 | 25 | 27 | 27 | 26 | 26 | 27 | 25 | 26 | 26 | 24 | 27 | 27 | 26 | 25 | 25 | 25 | 26 | 27 | 25 |
Feels °C | 35 | 33 | 30 | 29 | 29 | 31 | 29 | 30 | 28 | 28 | 31 | 26 | 29 | 30 | 30 | 28 | 29 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 15 | SE 11 | S 9 | SSW 8 | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 8 | S 8 | S 7 | SE 9 | SE 10 |
| kJ | 15 | 15 | 15 | 8 | 18 | 14 | 14 | 13 | 14 | 26 | 15 | 14 | 22 | 13 | 10 | 10 | 6 | 4 | 4 | 3 | 4 |
Swell 2 Height (m) Direction Period (s) | SE 16 | SE 16 | SSE 3 | S 7 | SE 15 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 10 | SE 9 | SE 10 | S 8 | S 7 |
| kJ | 10 | 10 | 1 | 4 | 8 | 18 | 16 | 16 | 16 | 15 | 15 | 9 | 4 | 3 | 3 | 3 | 4 | 3 | 4 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | S 7 | S 7 | SSE 15 | SE 11 | S 7 | SSE 14 | SE 14 | SE 14 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | S 8 | S 8 | SE 11 | S 8 |
| kJ | 1 | 1 | 22 | 5 | 1 | 20 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 1 | 1 | 5 | 1 |
Wind waves Height (m) Direction Period (s) | — | S 2 | — | — | S 2 | S 3 | NNE 2 | — | — | — | — | NNE 3 | NNE 2 | — | ESE 3 | — | — | — | — | S 3 | SSW 3 |
| kJ | — | 1 | — | — | 1 | 1 | 1 | — | — | — | — | 2 | 1 | — | 1 | — | — | — | — | 2 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 41 | 62 | 12 | 41 | 77 | 12 | 69 | 12 | 12 | 41 | 12 | 69 | 101 | 62 | 69 | 81 | 101 | 81 | 101 | 104 | 103 |
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.
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