Surf Forecasts:
Hanamizu River surf forecast from 29 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 9AM (local time) - 11ft (3.5m), 18s period, SE swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 3PM (local time) - 11ft (3.5m), 17s period, SSE swell with 7,440 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 6PM (local time) - 3.5ft (1.1m), 7s period with SW 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 (Jul 29) at 6PM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.6m and 7s. Another secondary swell of 0.1m and 9s is also forecast. 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 3.5m 17s and forecast to arrive on Wednesday (Aug 05) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 4s period and expected on Wednesday (Aug 05) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Wed 29th Jul) | 3.5ft (1.1m) 7s |
| Best Surf | 9AM (Wed 5th Aug) | 11ft (3.5m) 18s |
| Most Powerful | 3PM (Wed 5th Aug) | 11ft (3.5m) 17s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Hey folks, Rusty here. Let’s break down Hanamizu River.
Right off the bat, it’s flat. Wednesday the 29th and Thursday the 30th of July bring tiny, weak waves, around 0.2 to 0.4 ft, with cross-onshore breezes stirring things up. Not worth your time.
Friday the 31st morning goes glassy – super clean surface – but the swell is still only about 2 ft from the SSW and super short period (7 seconds). Energy is weak (46). It’s nice to look at, but there’s no power. Water temp is 81°, which is about what you’d expect for late July.
Saturday the 1st and Sunday the 2nd of August are even smaller, with 0.3 to 1 ft at a long 15-second period. That long interval at a beach/sandbar can make waves close out. Not ideal.
Then there’s a long gap. Monday the 3rd sees the first real energy: 3 ft to 4 ft SE swell with a very long 17-second period, but cross winds leave it choppy. Energy climbs (608 to 776) but the quality is marginal.
Here’s the standout. Tuesday the 4th of August morning is the call. Clean with a cross-offshore NNE wind at 12 mph, and an SE swell at 5 ft with a 17-second period. Energy hits 1601 – solid. The wind is clean, the swell has size and direction, and the long period will provide some proper lines. It's a little too much for beginners, but the consistent sets and offshore wind will make for quality waves.
Wednesday the 5th goes huge: 12 ft SE swell, same long period, with clean winds. That’s expert territory only. Energy is pumping over 6800 – very strong. Crowds are possible (“sometimes”), but the size will keep most away.
From Thursday the 6th onward, the swell drops off and the wind goes onshore or messy. Waves under 4 ft with cross-on breezes. A couple of mornings on the 10th and 13th have clean winds, but the swell is only 2 ft to 2 ft – not enough push.
Best bet: Tuesday the 4th of August morning. Clean, solid groundswell with real power. After that, it’s slim pickings for the rest of the window.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 30°C on Wed afternoon, min 26°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Sun night. Warm (max 29°C on Sun afternoon, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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) | SSW 6 | SSW 7 | SSW 7 | SSW 7 | S 7 | SSW 7 | SSW 7 | S 7 | S 6 | S 6 | S 7 | ESE 16 | SE 15 | SE 15 | SE 16 | SE 18 | SE 17 | SE 17 | SE 17 | SE 18 | SE 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 43 | 40 | 29 | 16 | 27 | 38 | 37 | 32 | 12 | 9 | 14 | 24 | 57 | 112 | 201 | 600 | 772 | 974 | 1597 | 2528 | 3903 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-on | cross-on | cross-off | glassy | cross-on | glassy | on | cross-on | glassy | on | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross-off |
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 | 10:50AM0.14m | 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 | — | — | 4:48 | — | — | 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 | 1 | — | — | — | — | — | 1 | — | 1 | 1 | — | — | 6 | — | — | — | — | — | — |
Temp °C | 28 | 30 | 29 | 29 | 29 | 28 | 30 | 30 | 27 | 28 | 28 | 27 | 28 | 29 | 26 | 27 | 28 | 27 | 28 | 28 | 26 |
Feels °C | 31 | 33 | 32 | 31 | 30 | 32 | 33 | 33 | 32 | 32 | 31 | 32 | 32 | 32 | 30 | 27 | 28 | 27 | 28 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SE 10 | SSW 7 | SSW 7 | SE 10 | S 6 | S 6 | SE 8 | ESE 16 | SE 15 | SE 15 | SE 16 | SE 18 | SE 17 | SE 17 | SE 17 | SE 18 | SE 18 |
| kJ | 43 | 40 | 29 | 16 | 4 | 38 | 37 | 4 | 12 | 6 | 3 | 24 | 57 | 112 | 201 | 600 | 772 | 974 | 1597 | 2528 | 3903 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 10 | SE 9 | SE 12 | SE 9 | SE 9 | S 8 | SE 11 | SE 10 | SE 17 | S 6 | SE 9 | SE 5 | SSE 9 | SSE 9 | E 14 | E 14 | E 14 | — | — |
| kJ | 4 | 3 | 4 | 3 | 6 | 3 | 3 | 1 | 4 | 4 | 11 | 2 | 14 | 1 | 8 | 8 | 4 | 4 | 4 | — | — |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 12 | SE 12 | SE 12 | S 8 | SE 12 | SE 12 | S 11 | S 8 | SE 15 | SE 14 | SE 4 | S 5 | SE 9 | — | — | — | — | — | — | — |
| kJ | 7 | 6 | 6 | 6 | 1 | 6 | 6 | 3 | 1 | 9 | 8 | 1 | 2 | 3 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | S 7 | — | — | S 7 | — | ESE 3 | S 7 | — | — | S 2 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 27 | — | — | 32 | — | 1 | 14 | — | — | 1 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 76 | 41 | 41 | 103 | 59 | 41 | 101 | 101 | 69 | 43 | 12 | 26 | 36 | 23 | 19 | 69 | 19 | 19 | 465 | 463 |
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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