Surf Forecasts:
Hanamizu River surf forecast from 19 Jul 2026:
- Most powerful swell: Wednesday 22 Jul, 6AM (local time) - 2.5ft (0.8m), 5s period, SW 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 0.8m 5s and forecast to arrive on Wednesday (Jul 22) at 6AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Wed 22nd Jul) | 2.5ft (0.8m) 5s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, Rusty here again, but in feet and miles for you. Let’s break down Hanamizu River.
First off, the honest truth: from Sunday the 19th of July through to the morning of Tuesday the 28th of July, it’s a total flat spell. Tiny waves, short-period chop, and mostly cross-onshore winds. Nothing worth paddling out for. Don’t waste your time.
The only real standout shows up on the morning of Wednesday the 29th of July. The swell jumps to about 5 feet from the SSW with a 14-second period – that’s proper groundswell. The combined energy is a strong 1022. What seals the deal is the wind: glassy. Dead flat, clean as a whistle. The water temp is around 79°, which is about normal for the time of year. This is a beach/sandbar setup, so with that long period, the waves might be a bit walled, but with offshore wind and clean conditions, it’s your best shot by a mile. The afternoon on the 29th gets a cross-onshore breeze, so hit it early.
The rest of the window is a slow fade. The 30th of July morning has about 5 feet of SSW swell but the wind is cross-shore and the energy drops. By the 31st of July and into August 1st, it’s getting smaller and windier. The first week of August looks small, weak, and choppy.
Bottom line: circle Wednesday the 29th of July. Dawn patrol, glassy, 5 feet of SSW groundswell. That’s the one. The rest is a long wait.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Tue morning, min 27°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 36mm), heaviest during Fri night. Warm (max 31°C on Thu afternoon, min 24°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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) | S 4 | S 8 | SSE 9 | SSE 8 | SSW 4 | SW 4 | ESE 11 | SSW 4 | SSW 4 | SSW 3 | SSW 6 | SSE 10 | SSW 6 | SSE 10 | SSE 9 | SSE 9 | SE 11 | SE 10 | SE 10 | SSE 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 12 | 5 | 7 | 7 | 10 | 7 | 12 | 10 | 4 | 5 | 20 | 15 | 11 | 9 | 12 | 8 | 18 | 15 | 15 | 22 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | on | cross-on | cross-off | on | cross-on | off | on | cross-on | off | on | cross | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 8:23PM1.40m | 8:21AM1.23m | 8:47PM1.39m | 9:26AM1.10m | 9:12PM1.37m | 10:59AM1.01m | 9:42PM1.35m | 1:53PM1.02m | 10:23PM1.31m | 4:27PM1.11m | 11:26PM1.28m | 4:24PM1.19m | 00:48AM1.28m | |||||||
Low Tide | 2:33AM0.63m | 2:19PM0.59m | 3:26AM0.59m | 2:44PM0.76m | 4:27AM0.55m | 3:05PM0.90m | 5:40AM0.52m | 3:14PM1.02m | 6:57AM0.47m | 5:02PM1.11m | 8:03AM0.40m | 7:57PM1.13m | ||||||||
 |  | | | | |  | | |  | | | |  | | | | |  | | |
 | — | — | 4:41 | — | — | 4:41 | — | — | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — | 4:45 | — | — |
 | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | 9 | — | 4 | 20 | — | 1 | 1 |
Temp °C | 28 | 27 | 29 | 30 | 29 | 31 | 30 | 29 | 30 | 30 | 29 | 30 | 31 | 28 | 28 | 28 | 25 | 25 | 26 | 25 |
Feels °C | 30 | 30 | 33 | 34 | 33 | 36 | 34 | 33 | 34 | 34 | 34 | 34 | 34 | 34 | 32 | 31 | 29 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSW 3 | SSE 8 | SSE 8 | SSW 4 | SSE 8 | SE 8 | SSW 4 | SE 8 | SSW 4 | SSW 6 | SSE 10 | SSE 10 | SSE 9 | SSW 6 | SE 11 | SE 10 | SE 10 | SE 10 |
| kJ | 5 | 5 | 1 | 7 | 7 | 3 | 6 | 2 | 4 | 2 | 5 | 6 | 10 | 9 | 8 | 3 | 18 | 15 | 15 | 15 |
Swell 2 Height (m) Direction Period (s) | SE 12 | S 8 | SSE 9 | S 7 | S 7 | SSE 8 | E 11 | SE 11 | SE 8 | SE 11 | SE 11 | SSE 10 | S 8 | S 3 | SSW 7 | SSE 9 | SE 16 | SE 16 | SE 16 | SSE 15 |
| kJ | 6 | 5 | 7 | 1 | 1 | 6 | 2 | 4 | 2 | 5 | 5 | 10 | 1 | 1 | 5 | 8 | 10 | 10 | 10 | 22 |
Swell 3 Height (m) Direction Period (s) | — | S 10 | S 7 | SE 11 | E 11 | E 11 | ESE 11 | — | SE 11 | SE 8 | SW 6 | SE 19 | S 19 | SW 5 | SE 18 | SE 11 | — | S 7 | S 8 | S 8 |
| kJ | — | 2 | 4 | 5 | 2 | 2 | 12 | — | 4 | 2 | 2 | 15 | 7 | 1 | 12 | 5 | — | 1 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | S 4 | SSW 4 | SW 3 | S 3 | SSW 4 | SW 4 | S 3 | SSW 4 | — | SSW 3 | SSW 6 | — | SSW 6 | — | — | ESE 2 | E 3 | — | — | — |
| kJ | 12 | 4 | 4 | 6 | 10 | 7 | 5 | 10 | — | 2 | 20 | — | 11 | — | — | 1 | 1 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 77 | 76 | 76 | 104 | 77 | 77 | 104 | 77 | 77 | 103 | 77 | 41 | 101 | 12 | 69 | 43 | 69 | 62 | 43 | 41 |
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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