Surf Forecasts:
Hanamizu River surf forecast from 24 Jul 2026:
- Most powerful swell: Tuesday 28 Jul, 3AM (local time) - 1.5ft (0.4m), 8s period, S swell with 23 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 8s and forecast to arrive on Tuesday (Jul 28) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Tue 28th Jul) | 1.5ft (0.4m) 8s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, Rusty here, let's talk about what's on the menu for the Hanamizu River. It's a bit of a slow start, so don't get your hopes up for the first week or so.
The first week and a half is a total write-off. We're looking at a solid 12 days of "poor surf conditions" all the way through the 4th of August. The swell is tiny, mostly under 1 ft, and the wind is nearly always a cross-onshore, making it a choppy, bumpy mess. Not a single wave worth paddling out for. It's a long, dry spell.
But then, things get interesting. The real story starts on the 5th of August. We’ve got a solid southeast swell beginning to roll in, with a period of 16 seconds. That's proper groundswell energy. The best bet in the whole window is going to be the Wednesday morning on the 5th of August. The swell hits 4 ft from the southeast, period is a meaty 16 seconds, and the wind is coming from the NNE at 16 mph, which is a clean cross-offshore breeze. The wave energy is strong, hitting 847. It's a clean, powerful setup. Thursday the 6th of August is also a standout morning, with a 7 ft swell from the same southeast direction. The wind is a clean cross-off at 19 mph, and the energy is massive at 2318. This is expert territory, though. Anything over 8 ft is for the pros, and Saturday the 8th is pushing 10 ft, but with nasty 28 mph cross-shore winds, it'll be a mess.
The Hanamizu River is a beach/sandbar, and with that long period groundswell, it can break a bit straight. It's a known spot for beginners, but on those days with 7 ft+ swell, it's going to be heavy and powerful, definitely not for the faint of heart. The water temperature is sitting at 80°, which is about average for this time of year.
So, to wrap it up: The first 12 days are a flat, wind-battered write-off. Don't bother. The real action is August 5th to the 7th. The morning of the 5th is the pick of the bunch for something solid but manageable. The 6th and 7th are for the experts only. It's a long wait, but there's a pulse of energy on the horizon.
Stay salty, Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Sat afternoon. Warm (max 29°C on Sat afternoon, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Mon afternoon. Warm (max 28°C on Mon morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | |||||||||||||||
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) | SSE 9 | SSE 9 | SE 11 | SE 10 | SE 10 | SSE 15 | SE 15 | SE 11 | SE 11 | SE 10 | SE 10 | S 8 | SE 10 | SE 10 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SE 12 | SSW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 12 | 11 | 18 | 15 | 15 | 22 | 8 | 18 | 20 | 20 | 16 | 22 | 15 | 15 | 14 | 14 | 13 | 7 | 6 | 6 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | on | cross-on | cross | glassy | cross-on | cross-off | cross-off | cross-on | cross | cross | on | cross-on | cross-on | cross-on | glassy | cross-on | cross-on | cross-off |
High Tide | 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 | 4:21AM1.46m | 6:13PM1.42m | ||||||||
Low Tide | 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 | 11:21AM0.13m | 11:31PM0.83m | ||||||||
 |  |  | | | |  | | | | |  | |  | |  | |  | | | | |
 | 4:45 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — | 4:48 | — | — |
 | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:49 | — |
mm | — | 1 | 3 | — | 5 | 3 | — | 5 | 3 | 2 | 10 | 6 | — | — | 1 | 1 | — | — | — | — | — |
Temp °C | 28 | 28 | 27 | 28 | 29 | 28 | 27 | 28 | 27 | 28 | 27 | 24 | 26 | 27 | 25 | 26 | 27 | 25 | 27 | 28 | 27 |
Feels °C | 31 | 31 | 32 | 33 | 33 | 33 | 30 | 31 | 32 | 30 | 29 | 26 | 28 | 30 | 28 | 29 | 28 | 28 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSE 9 | SE 11 | SE 10 | SE 10 | SE 10 | SE 15 | SE 11 | S 9 | SSW 8 | SSW 8 | S 8 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SE 10 | SW 8 |
| kJ | 3 | 8 | 18 | 15 | 15 | 15 | 8 | 18 | 14 | 14 | 13 | 22 | 15 | 15 | 14 | 14 | 13 | 7 | 6 | 4 | 2 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SE 17 | SE 16 | SE 16 | SE 16 | SSE 15 | SE 11 | SE 15 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 12 | SE 9 |
| kJ | 8 | 11 | 10 | 10 | 10 | 22 | 5 | 8 | 18 | 16 | 16 | 16 | 15 | 15 | 4 | 4 | 3 | 3 | 3 | 6 | 3 |
Swell 3 Height (m) Direction Period (s) | SE 18 | SE 11 | SW 7 | S 7 | S 7 | S 3 | SE 9 | S 9 | SSE 14 | SSE 14 | SSW 5 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | S 8 | S 8 |
| kJ | 12 | 5 | 2 | 1 | 1 | 1 | 3 | 2 | 20 | 20 | 3 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | — | S 2 | S 7 | — | S 2 | — | — | S 2 | — | — | — | ESE 3 | — | — | — | — | — | — | — | S 3 | SSW 4 |
| kJ | — | 1 | 4 | — | 1 | — | — | 1 | — | — | — | 2 | — | — | — | — | — | — | — | 2 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 69 | 43 | 12 | 41 | 62 | 69 | 12 | 103 | 12 | 20 | 69 | 76 | 69 | 12 | 69 | 62 | 43 | 76 | 81 | 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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