
Surf Forecasts:
Hanamizu River surf forecast from 6 Sep 2026:
- Best quality surf: Monday 7 Sep, 12PM (local time) - 10ft (3.0m), 9s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 12PM (local time) - 10ft (3.0m), 9s period, S swell with 1,320 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 9AM (local time) - 7ft (2.1m), 9s 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 Monday (Sep 07) at 9AM. The primary swell is predicted to be 2.1m and 9s period. 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 3.0m 9s and forecast to arrive on Monday (Sep 07) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Sep 09) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Mon 7th Sep) | 7ft (2.1m) 9s |
| Best Surf | 12PM (Mon 7th Sep) | 10ft (3.0m) 9s |
| Most Powerful | 12PM (Mon 7th Sep) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s talk about Hanamizu River.
We’ve got a bit of a mixed bag over the next couple of weeks. The first few days kick off with some solid, clean surf, but then it really drops off into a long, flat spell. The real standout is Monday the 7th – that’s your best bet by a long shot. Water temp is sitting at 82°, which is a touch warmer than normal for this time of year, so you’ll be comfortable in a spring suit or just boardies.
Monday, 7th September – This is the one to circle. Morning starts with heavy rain, but the wind is a light WNW cross-off at 6 mph, keeping the 7ft S swell (9-second period) super clean. The combined energy is moderate at 739, and the waves are packing a punch. It’s a beginner-friendly setup, so it’s great for everyone. By the afternoon, the swell jumps to 10ft from the S with the same 9-second period, and the energy rockets up to 2076 – that’s strong wave energy. The wind stays light and cross-off. This is big, powerful surf, and it’s excellent for experienced surfers only. Beginners, stay out of the water in the afternoon – it’s going to be a heavy one.
Tuesday, 8th September – Still decent. Morning brings cloudy skies and glassy conditions with a 3 mph ENE wind. The swell drops to 5ft from the S, period 9 seconds, and the energy is moderate at 527. It’s clean, fun, and easy. Afternoon sees heavy rain but it stays glassy with a 4ft SSE swell. Still good, but nothing like Monday.
Wednesday, 9th September – It starts to get ordinary. Morning is a cross-shore wind from the SW at 9 mph, with a 5ft SSW swell. It’s a bit choppy and marginal. Afternoon has a risk of thunderstorms, and the swell bumps up to 7ft from the S, but the wind is light and cross-shore, creating some ripples. Not great.
Thursday, 10th September – This is where it fades. The swell drops to under 3ft, and the wind picks up from the NNE at 9 mph. The waves are small, weak, and ordinary. The energy is just 117 in the morning and 84 in the afternoon. It’s surfable but not worth getting excited about.
Friday, 11th September through to Saturday, 19th September – This is a big gap. From Friday the 11th all the way through to Saturday the 19th, the surf is poor. Swell heights are barely 2ft or less, period is short, and the combined energy rarely gets above 100. It’s flat, weak, and messy. Honestly, there’s nothing to recommend here for a paddle surfer. The setup is more interesting for kite surfing than anything else during this stretch.
Sunday, 20th September to Monday, 21st September – We start to see a new pulse, but it’s still not good. The swell is from the ESE with a very long period of 16 to 19 seconds, but it’s small – under 3ft. The energy is moderate (341 to 540), but the wind is cross or cross-on, ruining the shape. The long period will make these waves break too straight for the beach setup, so it’s not a winner.
Tuesday, 22nd September – The final day of the forecast shows a bit more size with 4ft from the ESE, period 18 seconds, and the energy is strong at 764. But the wind is a moderate NNE breeze at 16 mph, creating a cross-off but still messy. It’s marginal, and with the long period, it’s not ideal for the beach break.
So, to wrap it up: Monday the 7th is your standout. The morning is perfect for everyone, and the afternoon is for the pros. After that, you’ve got a long, flat run until the 22nd, and even then it’s not great. Keep an eye on the forecasts, but for now, make the most of that Monday.
Rusty.
Short Range ForecastHeavy rain (total 94mm), heaviest during Mon morning. Warm (max 28°C on Wed morning, min 21°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 47mm), heaviest during Fri morning. Warm (max 24°C on Sat afternoon, min 20°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | S 9 | S 9 | S 9 | S 9 | SSE 9 | SSW 10 | SSW 10 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | SSW 7 | SE 9 | SE 7 | SE 8 |
Wave Graph | |||||||||||||||||||||
739 | 1288 | 476 | 320 | 276 | 506 | 351 | 621 | 313 | 113 | 65 | 30 | 28 | 29 | 17 | 9 | 8 | 5 | 12 | 14 | 35 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | glassy | glassy | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-off |
High Tide | 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 | 4:59AM1.54m | 5:24PM1.50m | 5:40AM1.52m | 5:42PM1.51m | ||||||||
Low Tide | 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 | 11:14AM0.34m | 11:29PM0.37m | 11:42AM0.46m | 00:01AM0.29m | ||||||||
5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | |
— | 6:01 | — | — | 6:00 | — | — | 6:00 | — | — | 5:58 | — | — | 5:57 | — | — | 5:54 | — | — | 5:53 | — | |
mm | 32 | 6 | 6 | 1 | 19 | 3 | 1 | 10 | 16 | 1 | 3 | 16 | 25 | 2 | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 25 | 26 | 25 | 26 | 28 | 26 | 21 | 22 | 21 | 21 | 21 | 21 | 21 | 23 | 24 | 24 | 26 | 27 | 26 |
Feels °C | 28 | 29 | 30 | 31 | 30 | 30 | 31 | 31 | 20 | 22 | 21 | 21 | 24 | 23 | 23 | 25 | 26 | 27 | 30 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | — | S 9 | S 9 | S 9 | S 9 | SSW 9 | SSE 8 | E 12 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | SSW 7 | SE 9 | SE 7 | SE 8 |
— | 788 | 476 | 320 | 165 | 185 | 94 | 3 | 313 | 113 | 65 | 30 | 28 | 29 | 17 | 9 | 8 | 5 | 12 | 14 | 35 | |
Swell 2 Height (m) Direction Period (s) | — | — | ESE 10 | SSW 9 | SSW 9 | SSE 8 | E 12 | E 16 | E 16 | E 11 | E 11 | SE 9 | SE 9 | SE 10 | SE 9 | SE 10 | SE 10 | SE 7 | SSW 7 | SE 9 | SSW 12 |
— | — | 10 | 197 | 90 | 76 | 3 | 5 | 5 | 2 | 2 | 3 | 3 | 4 | 3 | 4 | 4 | 2 | 5 | 3 | 14 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | ESE 10 | ESE 10 | ESE 10 | SE 12 | — | E 16 | — | E 15 | E 16 | S 9 | S 8 | S 8 | S 8 | E 14 | SE 9 | E 13 | S 7 | S 7 |
— | — | — | 10 | 10 | 10 | 6 | — | 5 | — | 17 | 5 | 1 | 1 | 1 | 1 | 4 | 3 | 3 | 4 | 1 | |
Wind waves Height (m) Direction Period (s) | S 9 | S 9 | — | — | SSE 9 | SSW 10 | SSW 10 | S 9 | NNE 3 | NE 2 | NE 3 | NNE 3 | NNE 3 | — | — | — | — | — | — | — | — |
739 | 1288 | — | — | 276 | 506 | 351 | 621 | 1 | 2 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 13 | 463 | 13 | 12 | 0 | 0 | 59 | 76 | 41 | 62 | 69 | 69 | 12 | 41 | 43 | 12 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










