Surf Forecasts:
Hanamizu River surf forecast from 3 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 12AM (local time) - 5ft (1.6m), 16s period, SSE swell with cross-offshore winds.
- Most powerful swell: Friday 10 Jul, 9AM (local time) - 6.5ft (2.0m), 17s period, S swell with 2,210 kJ wave energy.
- Next surfable swell (1★+): Tuesday 7 Jul, 9PM (local time) - 4.5ft (1.4m), 16s period with SSE 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 07) at 9PM. The primary swell is predicted to be 1.4m and 16s period with a secondary swell of 0.5m and 20s. 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 2.0m 17s and forecast to arrive on Friday (Jul 10) at 9AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 7th Jul) | 4.5ft (1.4m) 16s |
| Best Surf | 12AM (Wed 8th Jul) | 5ft (1.6m) 16s |
| Most Powerful | 9AM (Fri 10th Jul) | 6.5ft (2.0m) 17s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here again, same river, different numbers.
Gotta level with you—Hanamizu River is looking pretty quiet for the next couple weeks. Lots of days with nothing to offer.
From the 3rd through the 6th, it’s a dead zone. Tiny swell, weak energy (values around 20, 7, 10, 44), and even though it’s clean some mornings, there’s no wave to ride. A real gap in the action.
Tuesday the 7th is when we finally see something. A 0.8 ft SSE groundswell with a 16-second period, energy up to 435 (moderate). Morning wind is cross-offshore from the NNE at 12 mph, so it might be ridable, but the afternoon turns cross-shore with a 1 ft swell. Still only a 1 out of 10 quality, so nothing to write home about.
The one and only standout in this forecast lands on Sunday the 12th. That morning, we get 1 ft of SSW groundswell with a 15-second period, combined energy of 742 (moderate), and the wind is glassy out of the east at 3 mph. That’s about as clean as a river sandbar gets. The direction isn’t a perfect match (SSW swell, but the spot prefers SE), but with glassy conditions and that period, it’ll still offer some fun little waves. This is a beginner spot, so it’s a good morning for a longboard or foamie. It’s a long way out—more than a week—so treat it as a promising maybe, not a sure thing.
After that, the river drops off fast. By the 13th, it’s under 0.8 ft, and from the 14th onward we’re down to 0.5 ft and weak energy. The last week is all tiny junk and onshore wind.
Water temperature on the 3rd was about 74°, no real anomaly there—normal for summer.
In short: the only real window is Sunday the 12th morning. Everything else is a flat spell with a few small bumps. Keep your expectations low until then.
- Rusty
Short Range ForecastHeavy rain (total 36mm), heaviest during Sat night. Warm (max 23°C on Fri afternoon, min 20°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Mon afternoon. Warm (max 25°C on Tue morning, min 21°C on Mon afternoon). Wind will be generally light. | ||||||||||||||||||||
Fri 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | S 6 | S 6 | S 5 | SSE 3 | SE 10 | SE 4 | SE 6 | SE 7 | SE 14 | SE 13 | SE 16 | SSE 16 | SSE 16 | SSE 16 | SSE 18 | SSE 16 | SSE 15 | S 15 | S 15 | S 15 | S 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 12 | 6 | 3 | 3 | 15 | 5 | 42 | 54 | 53 | 45 | 69 | 347 | 838 | 1214 | 799 | 1652 | 1349 | 1138 | 1390 | 1344 | 2210 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | on | cross-on | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross | cross-on | glassy | cross-on | cross-on | glassy | on |
High Tide | 7:41PM1.38m | 6:19AM1.39m | 8:09PM1.39m | 7:03AM1.32m | 8:38PM1.40m | 7:54AM1.24m | 9:08PM1.40m | 8:58AM1.15m | 9:41PM1.39m | 10:25AM1.08m | 10:19PM1.38m | 12:24PM1.08m | 11:05PM1.37m | ||||||||
Low Tide | 00:59AM0.88m | 1:14PM0.24m | 1:42AM0.83m | 1:46PM0.33m | 2:30AM0.77m | 2:20PM0.45m | 3:25AM0.70m | 2:58PM0.60m | 4:28AM0.62m | 3:45PM0.76m | 5:38AM0.51m | 4:48PM0.92m | 6:49AM0.38m | ||||||||
 |  | |  |  | |  |  | | |  |  | | | | |  |  | | | | |
 | — | — | 4:31 | — | — | 4:33 | — | — | 4:33 | — | — | 4:33 | — | — | 4:33 | — | — | 4:35 | — | — | 4:35 |
 | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | 7:00 |
mm | — | — | — | 1 | 10 | 4 | 9 | 11 | 1 | 4 | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 23 | 23 | 23 | 21 | 22 | 22 | 21 | 21 | 21 | 25 | 23 | 22 | 24 | 25 | 23 | 24 | 26 | 23 | 26 |
Feels °C | 25 | 24 | 25 | 24 | 26 | 23 | 24 | 24 | 20 | 20 | 20 | 23 | 22 | 23 | 25 | 26 | 25 | 25 | 27 | 25 | 28 |
Swell 1 Height (m) Direction Period (s) | S 6 | S 6 | S 5 | SE 9 | SE 10 | SE 4 | SE 6 | SE 7 | SE 7 | SE 7 | SE 13 | SSE 16 | SSE 16 | SSE 16 | SSE 15 | SSE 16 | SSE 15 | S 15 | S 15 | S 15 | S 17 |
| kJ | 12 | 6 | 2 | 3 | 4 | 5 | 42 | 54 | 32 | 19 | 58 | 347 | 838 | 1214 | 752 | 1652 | 1349 | 1138 | 1390 | 1344 | 2210 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | SW 7 | SE 9 | — | SE 10 | SE 10 | S 10 | SSW 7 | SE 14 | SE 13 | SE 7 | SE 12 | — | SSE 21 | SSE 18 | — | ESE 8 | S 19 | ESE 8 | SSW 19 | ESE 9 |
| kJ | 5 | 2 | 3 | — | 15 | 4 | 2 | 5 | 53 | 45 | 19 | 86 | — | 346 | 799 | — | 20 | 361 | 26 | 497 | 16 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 9 | SW 6 | — | SW 6 | SW 6 | — | SE 15 | SW 7 | S 7 | SE 16 | SW 7 | — | ESE 9 | ESE 8 | — | — | ESE 8 | — | ESE 9 | — |
| kJ | 3 | 3 | 2 | — | 2 | 1 | — | 9 | 2 | 1 | 69 | 2 | — | 58 | 59 | — | — | 46 | — | 25 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SSE 3 | S 4 | — | — | — | NE 2 | — | — | — | — | — | — | — | — | — | S 4 | SSW 5 | SSW 5 |
| kJ | — | — | — | 2 | 9 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 18 | 30 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 43 | 41 | 104 | 104 | 81 | 461 | 12 | 34 | 19 | 123 | 112 | 123 | 19 | 0 | 10 | 10 | 0 | 19 | 43 | 0 | 16 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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