Surf Forecasts:
Hanamizu River surf forecast from 12 Sep 2026:
- Most powerful swell: Saturday 19 Sep, 12PM (local time) - 5ft (1.5m), 13s period, SE swell with 792 kJ wave energy.
Best Forecast Surf Conditions for Hanamizu River this week:
The most powerful waves expected at Hanamizu River in the next 16 days are 1.5m 13s and forecast to arrive on Saturday (Sep 19) 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 0.8m 4s period and expected on Friday (Sep 18) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12PM (Sat 19th Sep) | 5ft (1.5m) 13s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, it's Rusty kickin' the sand off my boots and lookin' at the charts for the home breaks. It's gonna be a story of patience, with a lot of flat water to stare at before a proper day pops up.
First things first, Hanamizu River is on the menu. It's a beginner-friendly beach and sandbar, breaks fairly consistent, but the next week and a half is a dead loss. From Sunday the 13th through Friday the 18th, you might as well hang the board up. Tiny dribbles, garbage conditions, and the wind's all wrong. The water temp's about 81°, which is normal for this time of year.
The first real sign of life hits on Monday the 21st of September. We see the swell finally showing up at 7ft from the south with a 13-second period, pumping some strong energy (1563). The wind's light from the NE, giving a light cross-shore. It's a bit lumpy though, and that 7ft south swell at a beach break is going to be a handful for most. It's expert territory. The afternoon sticks with 7ft south swell and a light onshore wind, keeping it messy.
There's a rough patch of onshore wind and storms before the absolute standout of the whole forecast. Mark your calendar for Monday the 28th of September. The morning session is the one. We're talkin' a perfect, glassy 6ft SSW swell with zero wind. That is a dream. The period is a crazy long 16 seconds, which means it's pure groundswell. This is proper, juice-filled waves that will hold their shape. It's too big for beginners, but for you guys charging it, that's gonna be a clean, empty-feeling session. It's busy there sometimes, but that early window will be worth fighting for. The afternoon gets choppy as the wind turns onshore, so you gotta be out there in the morning.
After that golden morning, the outlook dries right up again. The runs of small, gutless, and windy days after the 28th mean we only got that one true standout day. Plan for that Monday morning, and you'll be stoked.
- Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Warm (max 29°C on Mon morning, min 21°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Wed morning. Warm (max 23°C on Wed morning, min 18°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 7 | SE 9 | SE 8 | SSE 7 | S 4 | SE 9 | SE 8 | SE 8 | SSE 6 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 9 | SE 21 | SE 19 | SE 15 | SE 14 | SE 13 | SE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 12 | 15 | 4 | 28 | 21 | 24 | 16 | 29 | 12 | 17 | 17 | 9 | 11 | 7 | 17 | 129 | 525 | 565 | 649 | 403 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:42PM1.51m | 6:20AM1.46m | 6:01PM1.51m | 6:59AM1.37m | 6:20PM1.49m | 7:40AM1.27m | 6:38PM1.46m | 8:27AM1.16m | 6:58PM1.41m | 9:36AM1.06m | 7:17PM1.35m | 7:36PM1.27m | |||||||||
Low Tide | 11:42AM0.46m | 00:01AM0.29m | 12:07PM0.58m | 00:34AM0.27m | 12:29PM0.71m | 1:07AM0.28m | 12:48PM0.82m | 1:43AM0.34m | 1:01PM0.91m | 2:27AM0.42m | 1:01PM0.99m | 3:27AM0.51m | |||||||||
 |  |  | | |  |  | | |  |  |  | | |  | | |  | |  |  | |
 | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | 5:53 | — | — | 5:52 | — | — | 5:51 | — | — | 5:50 | — | — | 5:47 | — | — | 5:46 | — | — | 5:45 | — |
mm | — | — | — | — | — | 2 | 1 | — | 1 | 5 | — | 2 | 1 | — | 7 | — | — | — | 1 | 7 | 40 |
Temp °C | 23 | 24 | 24 | 29 | 29 | 26 | 26 | 26 | 25 | 23 | 23 | 22 | 22 | 23 | 20 | 19 | 19 | 22 | 22 | 22 | 21 |
Feels °C | 25 | 26 | 27 | 30 | 30 | 27 | 28 | 28 | 27 | 25 | 24 | 22 | 20 | 21 | 18 | 14 | 15 | 20 | 21 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SE 9 | SE 8 | SSE 7 | SE 10 | S 5 | SE 8 | SE 8 | SSE 6 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 8 | SE 8 | SE 19 | SE 15 | SE 14 | SE 13 | SE 11 |
| kJ | 5 | 12 | 15 | 4 | 15 | 11 | 24 | 15 | 29 | 12 | 17 | 17 | 9 | 9 | 7 | 3 | 129 | 525 | 565 | 649 | 403 |
Swell 2 Height (m) Direction Period (s) | SE 7 | E 13 | SW 7 | SE 8 | E 12 | SE 9 | S 7 | E 14 | SSW 6 | S 6 | S 6 | S 5 | SSE 8 | E 8 | SSE 9 | SE 8 | SE 8 | ESE 8 | SSE 17 | SW 9 | S 15 |
| kJ | 2 | 3 | 2 | 3 | 11 | 21 | 1 | 4 | 6 | 6 | 2 | 1 | 7 | 11 | 7 | 2 | 3 | 6 | 249 | 3 | 17 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SSW 7 | E 12 | E 12 | E 15 | S 7 | S 7 | E 14 | E 13 | SE 9 | E 13 | E 12 | E 12 | SSE 9 | E 11 | SE 21 | SSE 8 | S 10 | — | SW 9 | S 9 |
| kJ | 3 | 5 | 3 | 3 | 4 | 1 | 1 | 16 | 13 | 3 | 13 | 3 | 3 | 8 | 2 | 17 | 7 | 2 | — | 3 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | SSW 3 | SSW 2 | S 4 | SW 4 | SSW 4 | S 4 | — | NE 2 | NE 2 | NE 3 | NNE 3 | NNE 3 | NE 3 | NNE 4 | NE 4 | NNE 3 | N 3 | NNE 4 | — |
| kJ | — | — | 1 | 1 | 28 | 15 | 6 | 12 | — | 1 | 1 | 2 | 4 | 7 | 9 | 13 | 16 | 9 | 8 | 8 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 62 | 76 | 77 | 493 | 12 | 76 | 76 | 12 | 69 | 69 | 69 | 123 | 123 | 203 | 203 | 444 | 203 | 461 | 10 | 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.
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