Surf Forecasts:
Hanamizu River surf forecast from 8 Aug 2026:
- Best quality surf: Sunday 9 Aug, 6AM (local time) - 2.5ft (0.7m), 11s period, S swell with glassy winds.
- Most powerful swell: Tuesday 11 Aug, 6PM (local time) - 3.5ft (1.1m), 10s period, SSW swell with 251 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 6AM (local time) - 2.5ft (0.7m), 11s period with S 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 (Aug 09) at 6AM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.4m and 10s. 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 1.1m 10s and forecast to arrive on Tuesday (Aug 11) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Aug 15) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sun 9th Aug) | 2.5ft (0.7m) 11s |
| Best Surf | 6AM (Sun 9th Aug) | 2.5ft (0.7m) 11s |
| Most Powerful | 6PM (Tue 11th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking for the next couple of weeks.
To be straight with you, the 16-day window is a real struggle. There’s no good surf on offer for the first nine days – from Sunday the 9th right through to the following Monday afternoon. That’s a long, flat patch. We finally get a tiny glimmer of something surfable, but it’s a hard wait.
The only spot in the game is Hanamizu River. It’s a beach and sandbar setup, and it’s fairly consistent, but the conditions are just not cooperating. The water temp is about average for this time of year, nothing wild.
The first real chance comes on Thursday the 20th, in the afternoon. We’ve got a little bump of swell pushing in from the SE, around 3ft, with a period of 8 seconds. The combined energy is weak (110), so it’s not going to have much push. The wind is light and cross-off from the NNE though, so the surface will be clean. It’s surfable, but just barely.
That’s the only real standout, and it’s a weak one. For a beginner-friendly spot like this, the small size is fine, but it’s not going to get the heart racing. For the rest of the window, it’s poor surf and ordinary conditions. If you’re desperate for a paddle, Thursday afternoon is your best (and only) bet.
Stay patient, lads. It’s a tough run.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun night. Warm (max 29°C on Sun afternoon, min 23°C on Tue morning). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 25mm), heaviest during Fri afternoon. Warm (max 29°C on Thu morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 11 | SSW 10 | SSW 10 | SSW 11 | S 10 | SSW 11 | SSW 10 | SSW 10 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 191 | 112 | 115 | 88 | 80 | 93 | 59 | 62 | 161 | 59 | 63 | 86 | 83 | 57 | 38 | 17 | 29 | 17 | 18 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | glassy | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:07PM1.33m | 4:05PM1.31m | 00:49AM1.35m | 4:36PM1.39m | 2:12AM1.41m | 5:04PM1.45m | 3:16AM1.49m | 5:31PM1.47m | 4:10AM1.55m | 5:55PM1.48m | 4:59AM1.57m | 6:17PM1.48m | |||||||
Low Tide | 7:47AM0.25m | 8:17PM1.17m | 8:52AM0.13m | 9:22PM1.10m | 9:44AM0.04m | 10:06PM0.99m | 10:28AM0.00m | 10:44PM0.87m | 11:08AM0.03m | 11:20PM0.74m | 11:43AM0.11m | 11:56PM0.62m | |||||||
 |  | |  | |  |  |  |  | | | | | | | | |  | | |
 | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:00 | — | — |
 | 6:39 | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — |
mm | — | — | — | 1 | — | 1 | 1 | 1 | — | 3 | 2 | 6 | 1 | — | 1 | 4 | — | 8 | 4 |
Temp °C | 26 | 28 | 29 | 27 | 27 | 28 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 29 | 29 | 27 | 29 | 28 | 25 |
Feels °C | 30 | 31 | 32 | 30 | 29 | 31 | 24 | 25 | 28 | 27 | 27 | 27 | 26 | 30 | 31 | 29 | 29 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 10 | SSW 10 | SSW 11 | S 10 | SSW 11 | SSW 10 | SSW 10 | E 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSE 10 |
| kJ | 191 | 112 | 115 | 88 | 80 | 93 | 59 | 62 | 2 | 59 | 63 | 86 | 83 | 57 | 38 | 17 | 29 | 17 | 18 |
Swell 2 Height (m) Direction Period (s) | ESE 12 | ESE 13 | ESE 13 | SW 12 | SW 12 | ESE 12 | E 11 | SE 12 | SE 13 | SE 13 | S 5 | SE 12 | SE 10 | SE 11 | SE 12 | SSW 10 | SE 11 | S 10 | SSW 9 |
| kJ | 28 | 34 | 34 | 23 | 21 | 13 | 9 | 6 | 6 | 6 | 11 | 5 | 4 | 5 | 5 | 10 | 5 | 7 | 17 |
Swell 3 Height (m) Direction Period (s) | ESE 15 | SE 12 | SE 12 | ESE 12 | ESE 12 | SE 11 | SE 11 | E 11 | S 10 | S 10 | SE 10 | E 10 | SE 12 | S 9 | S 12 | S 12 | SE 9 | SE 11 | ESE 6 |
| kJ | 21 | 5 | 5 | 14 | 14 | 5 | 5 | 2 | 2 | 2 | 4 | 2 | 21 | 2 | 3 | 11 | 3 | 5 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSW 11 | SSW 5 | — | — | — | NE 2 | — | ENE 2 | NNE 3 | NE 3 | NE 3 |
| kJ | — | — | — | — | — | — | — | — | 161 | 22 | — | — | — | 1 | — | 1 | 4 | 2 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 27 | 36 | 0 | 17 | 10 | 10 | 76 | 0 | 0 | 10 | 10 | 3 | 19 | 59 | 59 | 123 | 465 | 12 |
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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