Surf Forecasts:
Hanamizu River surf forecast from 14 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 9PM (local time) - 2.5ft (0.7m), 9s period, S swell with 79 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 0.7m 9s and forecast to arrive on Wednesday (Jul 15) at 9PM. 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 | 9PM (Wed 15th Jul) | 2.5ft (0.7m) 9s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down the local surf.
It’s been a flat spell for a while, no doubt. The first week and a half at Hanamizu River is looking like a total lull. From Wednesday July 15th right through to the morning of the 29th, we’re seeing tiny waves – mostly under 0.7 ft – and a lot of cross-onshore breeze. The wave energy is almost always below 100 (combined energy of all swells directed here), which is just nothing. The water temperature is about what you’d expect for this time of year.
There are a couple of glassy moments, like Thursday July 16th morning and Tuesday July 21st afternoon, but the swell is tiny – 2 ft and 0.7 ft respectively – and the period is short. Not much to work with.
The only real standout is the morning of Wednesday July 29th. The swell is 2 ft from the SE, with a long period of 15 seconds – that’s real groundswell energy. The wind is cross-offshore from the WSW at 6 mph, so the surface will be clean. The combined energy of all swells directed here hits 278 (moderate wave energy). It’s a small wave, but with that long period, it could have some fun shape at the river mouth creek. That’s your best bet.
Then on Thursday July 30th morning, the swell jumps to 6 ft from the SSE with a 16-second period, and the energy is massive at 1758 (strong wave energy). But the wind is onshore, and it’s rated as marginal. That’s a big, powerful groundswell that could be too much for a beach setup, especially with the wind. Only for experts who know the spot.
The long stretch of poor surf from the 15th to the 28th is a drag, but it doesn’t stay dead forever. Keep an eye on that 29th of July morning.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Fri morning. Warm (max 30°C on Thu morning, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Fri night. Warm (max 29°C on Mon morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 10 | SSW 9 | SSW 9 | SSW 4 | S 5 | S 5 | SE 10 | SSW 8 | SSW 8 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | ESE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 38 | 34 | 16 | 17 | 18 | 13 | 16 | 6 | 6 | 12 | 12 | 11 | 17 | 15 | 9 | 8 | 14 | 6 | 6 | 6 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | glassy | glassy | cross-on | cross-off | cross | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-off | on | cross-on | cross-off | cross-on | glassy |
High Tide | 4:02AM1.56m | 6:34PM1.48m | 4:55AM1.57m | 7:05PM1.46m | 5:45AM1.54m | 7:33PM1.44m | 6:35AM1.46m | 7:58PM1.42m | 7:26AM1.35m | 8:23PM1.40m | 8:21AM1.23m | 8:47PM1.39m | 9:26AM1.10m | ||||||||
Low Tide | 10:53PM1.03m | 11:23AM-0.09m | 11:35PM0.95m | 12:05PM-0.03m | 00:17AM0.86m | 12:43PM0.08m | 1:00AM0.77m | 1:19PM0.24m | 1:45AM0.69m | 1:50PM0.42m | 2:33AM0.63m | 2:19PM0.59m | 3:26AM0.59m | 2:44PM0.76m | |||||||
 |  | |  | |  |  |  | |  |  |  | | | | | | | | | | |
 | — | 4:37 | — | — | 4:39 | — | — | 4:39 | — | — | 4:39 | — | — | 4:41 | — | — | 4:41 | — | — | 4:41 | — |
 | 6:58 | — | 6:58 | — | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 |
mm | — | — | — | — | — | 1 | 2 | 2 | 3 | 6 | 1 | — | — | — | — | — | — | — | 1 | — | 2 |
Temp °C | 27 | 28 | 29 | 28 | 30 | 30 | 28 | 29 | 28 | 26 | 25 | 26 | 25 | 26 | 27 | 27 | 29 | 29 | 28 | 29 | 29 |
Feels °C | 29 | 32 | 32 | 32 | 34 | 33 | 34 | 33 | 32 | 31 | 29 | 29 | 29 | 29 | 30 | 32 | 34 | 33 | 32 | 33 | 34 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 9 | SSW 9 | SSW 9 | S 5 | SSW 8 | SSW 8 | S 4 | SSW 8 | SSE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 11 |
| kJ | 38 | 34 | 16 | 16 | 18 | 7 | 6 | 1 | 6 | 8 | 12 | 11 | 17 | 15 | 9 | 6 | 14 | 6 | 6 | 6 | 5 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 9 | SE 9 | SSW 8 | SE 10 | SE 10 | SSW 8 | SE 9 | SSW 8 | S 8 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | SE 11 | S 7 | S 7 | ESE 11 |
| kJ | 4 | 4 | 3 | 3 | 7 | 4 | 4 | 6 | 3 | 6 | 1 | 2 | 6 | 6 | 5 | 5 | 1 | 5 | 1 | 1 | 12 |
Swell 3 Height (m) Direction Period (s) | S 14 | S 3 | SE 11 | E 11 | SE 9 | SE 8 | SE 10 | SE 9 | E 10 | SE 9 | SW 7 | S 7 | S 7 | SW 7 | E 12 | SSE 9 | SE 12 | S 9 | E 11 | E 11 | E 9 |
| kJ | 4 | 1 | 5 | 2 | 3 | 3 | 16 | 3 | 2 | 12 | 2 | 1 | 1 | 2 | 3 | 8 | 5 | 2 | 2 | 2 | 7 |
Wind waves Height (m) Direction Period (s) | SSW 3 | — | S 3 | SSW 4 | — | S 5 | SSW 4 | — | S 3 | SSE 3 | SSE 4 | SSE 4 | SSE 4 | S 4 | S 3 | S 3 | S 3 | S 3 | S 3 | S 3 | S 3 |
| kJ | 2 | — | 1 | 17 | — | 13 | 5 | — | 5 | 6 | 10 | 10 | 3 | 3 | 5 | 2 | 1 | 5 | 3 | 1 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 43 | 77 | 104 | 12 | 77 | 76 | 41 | 62 | 76 | 104 | 62 | 62 | 103 | 77 | 77 | 76 | 104 | 77 | 77 | 77 |
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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