Surf Forecasts:
Hanamizu River surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 3PM (local time) - 11ft (3.5m), 10s period, S swell with cross-shore winds.
- Most powerful swell: Monday 7 Sep, 3PM (local time) - 11ft (3.5m), 10s period, S swell with 2,468 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 9AM (local time) - 1.5ft (0.5m), 9s 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 Saturday (Sep 05) at 9AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.3m and 8s. Another secondary swell of 0.2m and 2s 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 10s and forecast to arrive on Monday (Sep 07) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Monday (Sep 07) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sat 5th Sep) | 1.5ft (0.5m) 9s |
| Best Surf | 3PM (Mon 7th Sep) | 11ft (3.5m) 10s |
| Most Powerful | 3PM (Mon 7th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a good hard look at what’s coming up for Hanamizu River. The window is a mixed bag, with plenty of flat spells, but there are a couple of windows that are worth getting excited about.
Right now, the surf is tiny. We’re looking at a few days of small, weak waves to start. Saturday the 5th has a bit of swell showing, with a 2ft SSW swell, but the wind is cross-off and the energy is weak (69). It’s surfable but nothing to write home about. Sunday the 6th stays similar but smaller, with a messy NE wind making a mess of things.
The first real standout hits on Monday the 7th. A strong S swell pushes in, with the morning seeing a 8ft S swell. The combined energy is massive at 1564, so there is plenty of power. The wind is a clean cross-off from the W. This is excellent surf, but with waves that size, it’s strictly for experienced surfers. The afternoon gets even bigger, with 12ft S swell and energy at 3736, but that’s just too big for this spot, especially with a cross wind.
Tuesday the 8th is another great shout, especially the morning. The swell drops to a still solid 6ft from the S (668 energy), and the wind is glassy from the NE. It’s clean, it’s got push, and the conditions are very good. The afternoon stays okay at 5ft but gets a light cross-on wind.
Wednesday morning the 9th is a ripper for the experienced crew again – a 10ft S swell with glassy conditions and energy at 2447. Pure power, but again, only for those who know what they’re doing.
After Wednesday, the energy drops right off. From Thursday the 10th all the way through to Saturday the 20th of September, it’s a long stretch of tiny, weak surf that’s best left alone. Most of those days are clean, but there’s just no real swell to work with. There is a little bump on Sunday the 20th afternoon with a 5ft SSW swell and glassy wind, but the period is a short 6 seconds, so it’s not going to be anything special.
The standout is clearly Monday the 7th and Tuesday the 8th, with Monday morning being the pick for the brave, and Tuesday morning being the best all-rounder for a clean, powerful session.
Crowds? Hanamizu River can get busy sometimes, so if you are heading out on those good days, get there early.
The water temp is sitting at 82°F, which is a touch warmer than normal for this time of year.
Stay safe out there.
Rusty
Short Range ForecastHeavy rain (total 269mm), heaviest during Mon morning. Warm (max 26°C on Mon afternoon, min 21°C on Sun afternoon). Winds decreasing (fresh winds from the N on Sun night, calm by Mon night). | Days 4-6 Weather SummaryHeavy rain (total 158mm), heaviest during Tue night. Warm (max 25°C on Tue morning, min 19°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 9 | SSW 9 | SSW 8 | NE 4 | SE 8 | S 12 | S 9 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 50 | 27 | 14 | 13 | 15 | 213 | 1199 | 2468 | 884 | 644 | 449 | 377 | 1614 | 682 | 280 | 159 | 99 | 49 | 32 | 30 | 19 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | glassy | cross-on | cross-off | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:45PM1.32m | 3:36PM1.25m | 10:48PM1.25m | 3:45PM1.33m | 1:09AM1.28m | 4:04PM1.39m | 2:28AM1.38m | 4:25PM1.43m | 3:26AM1.47m | 4:45PM1.46m | 4:15AM1.53m | 5:05PM1.49m | |||||||||
Low Tide | 6:11AM0.37m | 7:15PM1.21m | 7:42AM0.29m | 8:41PM1.09m | 8:43AM0.22m | 9:20PM0.95m | 9:30AM0.17m | 9:53PM0.79m | 10:09AM0.18m | 10:26PM0.63m | 10:43AM0.24m | 10:57PM0.49m | |||||||||
 |  |  |  |  |  |  | |  | | | | | |  | | | | | | | |
 | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — |
 | — | 6:05 | — | — | 6:04 | — | — | 6:01 | — | — | 6:00 | — | — | 6:00 | — | — | 5:58 | — | — | 5:57 | — |
mm | 4 | 1 | 1 | — | 8 | 102 | 128 | 23 | 2 | 21 | 4 | 60 | 45 | 15 | 6 | — | 3 | 4 | 1 | — | 1 |
Temp °C | 22 | 23 | 22 | 23 | 23 | 22 | 24 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 22 | 21 | 20 | 19 | 20 | 20 | 20 |
Feels °C | 24 | 25 | 22 | 19 | 21 | 22 | 27 | 29 | 30 | 31 | 30 | 28 | 29 | 27 | 21 | 20 | 19 | 18 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSW 9 | SSW 8 | SE 7 | SE 8 | S 12 | ESE 8 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 |
| kJ | 50 | 27 | 14 | 8 | 15 | 213 | 365 | 1268 | 884 | 644 | 449 | 377 | 821 | 682 | 280 | 159 | 99 | 49 | 32 | 30 | 19 |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 7 | SE 7 | SSW 8 | SSE 8 | SE 9 | — | — | — | SSW 11 | SSW 11 | — | E 17 | E 16 | E 16 | E 11 | — | SE 9 | SE 9 | E 10 | SE 9 |
| kJ | 11 | 7 | 7 | 7 | 13 | 38 | — | — | — | 24 | 65 | — | 6 | 5 | 5 | 2 | — | 3 | 3 | 2 | 3 |
Swell 3 Height (m) Direction Period (s) | E 9 | SE 8 | SE 8 | SSE 8 | S 8 | NNW 5 | — | — | — | — | — | E 12 | E 17 | E 12 | SE 11 | — | E 15 | E 16 | E 15 | E 16 | E 16 |
| kJ | 7 | 3 | 3 | 7 | 1 | 2 | — | — | — | — | — | 3 | 6 | 3 | 5 | — | 17 | 5 | 5 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | ENE 2 | — | NE 3 | NE 4 | ENE 4 | NNE 4 | S 9 | S 10 | — | — | — | N 2 | S 10 | — | NE 3 | NE 3 | NNE 3 | NNE 3 | NNE 2 | — | NNE 2 |
| kJ | 1 | — | 2 | 13 | 8 | 29 | 1199 | 2468 | — | — | — | 1 | 1614 | — | 5 | 5 | 4 | 4 | 1 | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 59 | 59 | 461 | 540 | 527 | 0 | 463 | 0 | 0 | 12 | 0 | 0 | 10 | 19 | 12 | 19 | 12 | 253 | 59 | 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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