Surf Forecasts:
Hanamizu River surf forecast from 29 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 6PM (local time) - 11ft (3.5m), 17s period, SSE swell with cross-onshore winds.
- Most powerful swell: Wednesday 5 Aug, 6PM (local time) - 11ft (3.5m), 17s period, SSE swell with 6,204 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 6PM (local time) - 11ft (3.5m), 17s 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 Wednesday (Aug 05) at 6PM. The primary swell is predicted to be 3.5m and 17s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Hanamizu River in the next 16 days are 3.5m 17s and forecast to arrive on Wednesday (Aug 05) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Wed 5th Aug) | 11ft (3.5m) 17s |
| Best Surf | 6PM (Wed 5th Aug) | 11ft (3.5m) 17s |
| Most Powerful | 6PM (Wed 5th Aug) | 11ft (3.5m) 17s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, Rusty here. It's been a slow start, but here's the full rundown.
The first week and a bit is a total bummer – nothing but tiny dribblers and bad wind from now until nearly the end of the first week of August. We’re staring at a long dry spell. But hang tight, because the second week brings a serious pulse of energy.
The first real bump comes through on Monday, August 4th at Hanamizu River. Swell hits about 6ft from the SE, with a very long 16-17 second period. The wave energy is moderate (1930), so there’s some grunt, but the wind is sketchy – cross and cross-onshore – and the forecast still calls it marginal. Not the one.
The real standout, the session you want to aim for, is Wednesday, August 6th and Thursday, August 7th. The swell jumps to a solid 10ft from the SSE – that’s expert territory. The period is a very long 16-17 seconds, and the wave energy hits a massive 6198. That’s some serious ocean power for this beach/sandbar. With that long period, it might be a bit fat and straight, but the energy is undeniable. Winds stay light from the E and SSE, keeping the surface manageable.
After that, Friday, August 8th morning still holds at around 8ft from the S with a light cross-on, but the energy is fading. By Sunday, August 10th, the swell drops to a cleaner but much smaller 3ft from the SW with glassy conditions – a better call for the learners after the big stuff passes.
For the experts, the August 6th and 7th window is the only real standout for a powerful paddle session. For the kite crowd, any of those big days from the 4th to the 7th with cross-onshore wind will be a blast.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Fri night. Warm (max 31°C on Wed afternoon, min 26°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Sun morning, min 24°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Wed 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | ||||||||||||||
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 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 7 | S 7 | SSW 6 | SSW 7 | S 7 | ESE 16 | SE 15 | SE 16 | SE 16 | ESE 17 | SE 17 | SE 18 | SE 16 | SE 17 | SE 17 |
Wave Graph  | ||||||||||||||||||||
 kJ | 40 | 28 | 16 | 10 | 26 | 22 | 32 | 8 | 4 | 12 | 25 | 55 | 121 | 201 | 522 | 580 | 1087 | 1537 | 1927 | 3003 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | glassy | cross-on | cross-off | glassy | cross-on | glassy | glassy | cross-on | glassy | on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 5:51PM1.39m | 4:21AM1.46m | 6:13PM1.42m | 5:00AM1.48m | 6:35PM1.44m | 5:38AM1.47m | 6:56PM1.46m | 6:18AM1.43m | 7:18PM1.46m | 7:00AM1.37m | 7:41PM1.46m | 7:48AM1.28m | 8:05PM1.45m | |||||||
Low Tide | 10:59PM0.90m | 11:21AM0.13m | 11:31PM0.83m | 11:50AM0.15m | 00:04AM0.75m | 12:19PM0.20m | 00:38AM0.68m | 12:47PM0.29m | 1:15AM0.61m | 1:15PM0.41m | 1:55AM0.55m | 1:44PM0.55m | 2:41AM0.50m | |||||||
 |  | |  | | |  |  | | |  | | | | | | | | | | |
 | — | — | 4:48 | — | — | 4:50 | — | — | 4:50 | — | — | 4:50 | — | — | 4:52 | — | — | 4:52 | — | — |
 | 6:49 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — |
mm | — | — | — | — | — | — | 1 | 5 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 31 | 29 | 28 | 29 | 28 | 30 | 30 | 26 | 29 | 29 | 28 | 30 | 30 | 28 | 27 | 28 | 26 | 29 | 31 | 26 |
Feels °C | 35 | 32 | 32 | 32 | 32 | 33 | 32 | 32 | 33 | 32 | 33 | 34 | 33 | 32 | 29 | 30 | 27 | 30 | 32 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 7 | S 8 | SSW 6 | SSW 7 | SE 15 | ESE 16 | SE 15 | SE 16 | SE 16 | ESE 17 | SE 17 | SE 18 | SE 16 | SE 17 | SE 17 |
| kJ | 40 | 28 | 16 | 10 | 26 | 22 | 1 | 8 | 4 | 8 | 25 | 55 | 121 | 201 | 522 | 580 | 1087 | 1537 | 1927 | 3003 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 10 | SE 9 | SE 10 | SE 9 | SE 9 | SE 9 | SSE 4 | SE 10 | SE 8 | S 5 | SE 9 | SE 9 | E 15 | S 9 | S 8 | E 14 | — | E 13 | — |
| kJ | 3 | 4 | 3 | 4 | 3 | 3 | 3 | 1 | 4 | 3 | 2 | 3 | 3 | 4 | 6 | 1 | 4 | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | S 11 | SE 10 | SE 5 | SE 18 | SE 9 | S 5 | SE 7 | — | — | — | — | — | — | — |
| kJ | 6 | 6 | 6 | 6 | 6 | 6 | 3 | 4 | 1 | 12 | 3 | 2 | 2 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | S 7 | SE 5 | — | S 7 | — | — | — | SE 9 | E 3 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 32 | 3 | — | 8 | — | — | — | 22 | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 76 | 41 | 41 | 103 | 41 | 41 | 104 | 104 | 104 | 77 | 12 | 10 | 36 | 19 | 59 | 31 | 19 | 19 | 33 | 19 |
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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