Surf Forecasts:
Hanamizu River surf forecast from 23 Jul 2026:
- Most powerful swell: Wednesday 29 Jul, 12PM (local time) - 1.5ft (0.5m), 7s period, SSW swell with 28 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 0.5m 7s and forecast to arrive on Wednesday (Jul 29) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Monday (Jul 27) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12PM (Wed 29th Jul) | 1.5ft (0.5m) 7s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here. Let’s be straight with you right off the bat—this is a lean stretch for Hanamizu River. The next week and a half is pretty much a write-off for any decent paddle surfing. You’ll be staring at a long gap of flat, weak, and messy conditions from now until about the 4th of August. There’s simply no wave energy to speak of, and the wind is a constant problem, mostly cross-onshore or choppy.
We kick off Thursday 23rd July with a tiny 1ft SW swell but the wind is cross-on from the south at 9 mph, making it a messy, choppy affair. Not worth a second look. Friday 24th through to the end of the month sees barely a ripple, with swell heights stuck at 0.3ft to 1.0ft. The wind is all over the place—sometimes glassy on the morning of Monday 27th, but even then, the swell is a pathetic 1.0ft with next to no energy (combined energy of all swells directed here at 39). It’s just not happening.
The first real glimmer comes on Tuesday 4th August. The early morning session shows a 3ft SE swell, period a solid 16 seconds, and the combined energy of all swells directed here ramps up to 541 (moderate wave energy). Winds are light from the east at 3 mph, coming cross-onshore, with small wind ripples. It’s still only a marginal call, but for this stretch, it’s the standout. The size is manageable for most, but the long period means it’s a groundswell—better suited to a point or reef than a river mouth sandbar, so don’t expect perfection. Still, this is the best on offer. The afternoon of the 4th pushes the same wave size but the wind picks up and turns choppy, so get out early.
The 5th and 6th of August keep some energy in the water, with swell around 2ft to 2ft and a very long 16-second period, but the wind is moderate and cross or cross-off, so it’s not clean. The water temperature on the 23rd July sits at 80°, which is about average for the time of year with a +0.8° anomaly—nothing unusual.
Honestly, for the next 16 days, there’s only one window that even looks like a surf, and that’s the morning of Tuesday 4th August. If you’re keen, you’ll have to be patient. The lack of consistency is normal for this spot, but it won’t stay this flat forever. Forecasts can change.
Rusty
Short Range ForecastModerate rain (total 17mm), heaviest on Sat night. Warm (max 31°C on Thu afternoon, min 25°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 22mm), heaviest during Mon night. Warm (max 29°C on Mon morning, min 23°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
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) | SSW 6 | SSE 10 | SSE 9 | SSE 9 | SE 11 | SE 10 | SE 10 | SSE 15 | SE 15 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SSW 9 | SSW 6 | SSW 8 | SSW 7 | SSW 7 | SSW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 12 | 12 | 12 | 11 | 18 | 15 | 15 | 22 | 8 | 18 | 20 | 16 | 16 | 16 | 15 | 14 | 23 | 26 | 28 | 21 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | on | cross-on | glassy | on | cross-on | cross | cross-on | cross-on | off | glassy | cross-on | cross | cross | cross-off | cross-off | cross | cross-on | cross-off |
High Tide | 10:23PM1.31m | 4:27PM1.11m | 11:26PM1.28m | 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 | ||||||||
Low Tide | 3:14PM1.02m | 6:57AM0.47m | 5:02PM1.11m | 8:03AM0.40m | 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 | |||||||
 |  | |  |  |  | | | | | | | |  |  | |  |  | | | |
 | — | — | 4:45 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — |
 | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — |
mm | — | — | — | — | 2 | 2 | 3 | 10 | — | 1 | 2 | — | 2 | 8 | 2 | 2 | 3 | 2 | 2 | 4 |
Temp °C | 31 | 29 | 28 | 28 | 27 | 28 | 28 | 26 | 27 | 28 | 27 | 29 | 29 | 26 | 24 | 24 | 24 | 26 | 27 | 25 |
Feels °C | 34 | 34 | 31 | 31 | 32 | 33 | 32 | 30 | 28 | 31 | 32 | 31 | 30 | 29 | 26 | 26 | 27 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SE 10 | S 5 | SSW 6 | SSW 7 | SE 11 | SE 10 | SE 10 | SE 10 | SE 15 | SE 11 | S 9 | SSW 8 | SSW 8 | SSW 5 | SSW 6 | SSW 8 | SSW 8 | SSW 7 | SE 9 | SSW 8 |
| kJ | 4 | 4 | 4 | 5 | 18 | 15 | 15 | 15 | 8 | 18 | 14 | 14 | 14 | 6 | 10 | 14 | 23 | 26 | 3 | 21 |
Swell 2 Height (m) Direction Period (s) | S 8 | SSE 10 | SSE 9 | SSE 9 | SSE 3 | SE 16 | SE 16 | SSE 15 | SE 11 | SE 15 | SE 11 | SE 10 | SE 10 | SSW 8 | SSW 9 | SSE 10 | SSE 10 | SE 10 | SE 12 | SE 10 |
| kJ | 1 | 9 | 8 | 8 | 1 | 10 | 10 | 22 | 5 | 8 | 18 | 16 | 16 | 14 | 15 | 10 | 9 | 4 | 6 | 4 |
Swell 3 Height (m) Direction Period (s) | S 19 | SE 18 | SE 18 | SE 17 | SE 16 | S 7 | S 7 | S 8 | SE 9 | S 9 | SSE 14 | SE 14 | SE 14 | SE 10 | SSE 10 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 |
| kJ | 7 | 12 | 12 | 11 | 10 | 1 | 1 | 1 | 3 | 2 | 20 | 8 | 8 | 16 | 9 | 7 | 7 | 7 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | SSW 6 | — | — | S 2 | SE 3 | — | S 3 | ESE 2 | — | S 2 | SSW 3 | SW 3 | — | — | E 5 | SSW 6 | — | — | SSW 7 | ESE 2 |
| kJ | 12 | — | — | 1 | 3 | — | 1 | 1 | — | 1 | 2 | 1 | — | — | 1 | 10 | — | — | 28 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 69 | 69 | 101 | 43 | 12 | 41 | 43 | 41 | 43 | 77 | 10 | 12 | 62 | 69 | 69 | 12 | 12 | 76 | 62 | 80 |
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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