
Surf Forecasts:
Hanamizu River surf forecast from 20 Jul 2026:
- Best quality surf: Sunday 26 Jul, 9PM (local time) - 1.5ft (0.4m), 10s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 28 Jul, 3AM (local time) - 2.5ft (0.7m), 9s period, SSW swell with 84 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 9PM (local time) - 1.5ft (0.4m), 10s period with SSW 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 Sunday (Jul 26) at 9PM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.3m and 11s. Another secondary swell of 0.3m and 3s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hanamizu River in the next 16 days are 0.7m 9s and forecast to arrive on Tuesday (Jul 28) at 3AM. 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+) | 9PM (Sun 26th Jul) | 1.5ft (0.4m) 10s |
| Best Surf | 9PM (Sun 26th Jul) | 1.5ft (0.4m) 10s |
| Most Powerful | 3AM (Tue 28th Jul) | 2.5ft (0.7m) 9s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s be real – this 16-day stretch for Hanamizu River is mostly a flat spell. It’s a beginner-friendly beach and sandbar break, fairly open to the swell coming from the SE, but the first week and a half is tiny and ugly.
From now through the end of July, it’s a long, boring run. Swell is mostly under 2ft, cross-onshore breezes, and the energy is weak – barely above 100 (13 to 98) in combined readings. That’s about an 11-day gap with nothing worth wetsuiting up for. Even the rare glassy morning, like Friday the 24th in the morning or Sunday the 26th in the afternoon, only gives you knee-high dribble. Not worth the drive.
Finally, on Monday the 27th of July afternoon, there’s a pulse: 2ft SSW swell with a 9-second period, combined energy of 86 – still weak, but it’s glassy. The report says “surfable waves but very ordinary,” but it’s the first real chance you get.
The real standout shows up on Monday the 3rd of August in the morning: 5ft SSW swell, 14-second period, combined energy hitting 794 (moderate), and glassy conditions with offshore NW wind. Water temp is about 79°F – normal for the time of year, nothing weird. The swell direction (SSW) isn’t a perfect match for the optimal SE direction, but the clean, glassy surface and decent size make it the best window. It’s still beginner-friendly height, so good for the learning crew. With a 14-second period, that’s groundswell – longer lulls between sets, easier paddling, but it can make the sandbar break a bit straight. Worth checking.
Tuesday the 4th of August morning is similar: 5ft SSW, 14 seconds, glassy, combined energy at 946 – another strong option. After that, it drops off.
So, my pick is Monday the 3rd of August morning at Hanamizu River. Clean, glassy, chest-to-shoulder-high SSW swell. Crowds are “sometimes” around, so expect a few others on the sandbar.
It’s been flat, but there’s a pulse coming.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue night. Warm (max 31°C on Tue morning, min 27°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Fri night. Warm (max 30°C on Fri morning, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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 8 | SSW 4 | SW 4 | SW 4 | SSW 3 | SSW 4 | SSE 10 | SSW 6 | SW 4 | SSE 9 | SSE 9 | SE 11 | SE 10 | SE 10 | SSE 15 | SE 15 | SE 11 | SE 11 | SSW 9 | SSW 9 | SSW 9 |
Wave Graph | |||||||||||||||||||||
6 | 12 | 21 | 9 | 5 | 7 | 10 | 12 | 13 | 12 | 11 | 18 | 15 | 15 | 22 | 8 | 18 | 18 | 26 | 61 | 82 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | off | on | cross-on | cross-off | cross-on | cross-on | off | glassy | cross-on | cross-off | cross-on | cross-on | glassy | cross-on | glassy | glassy | cross | glassy | glassy |
High Tide | 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 | 4:44PM1.26m | 1:59AM1.31m | 5:07PM1.31m | 2:54AM1.37m | |||||||
Low Tide | 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 | 8:56AM0.32m | 9:09PM1.09m | 9:39AM0.25m | 9:52PM1.04m | ||||||||
4:41 | — | — | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | |
— | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | |
mm | — | — | 2 | — | 1 | — | — | 1 | 2 | — | 6 | 7 | — | 3 | 5 | 2 | 1 | 5 | — | 2 | 12 |
Temp °C | 31 | 30 | 30 | 30 | 30 | 29 | 30 | 31 | 29 | 30 | 29 | 27 | 29 | 29 | 26 | 24 | 24 | 25 | 27 | 27 | 26 |
Feels °C | 35 | 33 | 34 | 35 | 35 | 33 | 34 | 35 | 34 | 35 | 33 | 31 | 33 | 32 | 30 | 28 | 28 | 30 | 31 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 4 | SE 8 | SSW 4 | SSW 4 | SE 8 | SE 11 | SSW 5 | SSE 10 | SSW 4 | SSW 4 | SSE 9 | SE 11 | SE 10 | SE 10 | SE 10 | S 7 | SE 11 | SSW 10 | S 6 | SSW 9 | SSW 9 |
1 | 3 | 11 | 3 | 2 | 5 | 6 | 10 | 6 | 4 | 8 | 18 | 15 | 15 | 15 | 4 | 18 | 18 | 19 | 61 | 82 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SE 11 | SE 8 | SE 8 | SE 11 | SE 7 | SSE 10 | SE 8 | SSE 10 | SSE 9 | SE 17 | S 4 | SSW 7 | SE 16 | S 5 | SE 15 | S 10 | SE 11 | SSW 9 | SE 10 | SE 10 |
6 | 5 | 2 | 2 | 5 | 2 | 10 | 3 | 9 | 8 | 11 | 2 | 4 | 10 | 2 | 8 | 8 | 18 | 26 | 16 | 16 | |
Swell 3 Height (m) Direction Period (s) | E 11 | ESE 11 | SE 11 | SE 11 | SE 11 | S 6 | S 6 | S 19 | SE 18 | SE 18 | SE 11 | SE 16 | SE 16 | SSW 7 | SSE 15 | SE 11 | SE 15 | SSW 6 | SE 10 | SE 14 | SE 13 |
2 | 12 | 4 | 4 | 4 | 1 | 1 | 7 | 12 | 12 | 5 | 10 | 10 | 4 | 22 | 5 | 8 | 4 | 16 | 8 | 7 | |
Wind waves Height (m) Direction Period (s) | SW 3 | SSW 4 | SW 4 | SW 4 | SSW 3 | SSW 4 | — | SSW 6 | SW 4 | — | S 5 | — | — | — | — | — | S 3 | SSW 4 | — | SSW 3 | — |
4 | 11 | 21 | 9 | 3 | 7 | — | 12 | 13 | — | 4 | — | — | — | — | — | 2 | 5 | — | 1 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 77 | 509 | 77 | 77 | 104 | 77 | 41 | 77 | 77 | 76 | 77 | 12 | 41 | 101 | 69 | 62 | 12 | 12 | 10 | 0 | 0 |
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.










