Surf Forecasts:
Hanamizu River surf forecast from 29 Aug 2026:
- Best quality surf: Friday 4 Sep, 9AM (local time) - 6.5ft (2.0m), 7s period, S swell with cross-offshore winds.
- Most powerful swell: Friday 4 Sep, 9AM (local time) - 6.5ft (2.0m), 7s period, S swell with 431 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 12AM (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 Thursday (Sep 03) at 12AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.4m and 7s. Another secondary swell of 0.3m and 3s 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 2.0m 7s and forecast to arrive on Friday (Sep 04) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Sep 04) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 3rd Sep) | 1.5ft (0.5m) 9s |
| Best Surf | 9AM (Fri 4th Sep) | 6.5ft (2.0m) 7s |
| Most Powerful | 9AM (Fri 4th Sep) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let's take a look at the local crystal ball for Hanamizu River.
We're looking at a pretty quiet start to the forecast period. For the first few days, it's all tiny, weak little waves with poor conditions. The water temp is sitting at 28°, which is about average for the time of year, so nothing weird there.
The first real glimmer of hope doesn't show up until Friday, September 4th. Early that morning, we might see a 7ft swell from the S, but it's got a short period of 7 seconds. The wind will be a nice cross-offshore from the NNE, keeping things clean. The combined energy (736) is up there, but that short period means it'll be a bit crumbly, and at 7ft, it's getting a bit serious for the beginners. This is probably the pick of the early days, but it's not a total standout.
The real standout, the one you want to circle on the calendar, is Monday, September 7th. The morning glass-off with light ESE breezes will be magic. We've got a solid 4ft groundswell from the S with a very long 12-second period. The combined energy (525) is solid, and with that period and glassy conditions, Hanamizu River should be offering up some proper, clean lines. It's a beach/sandbar setup, so those long-period swells can sometimes straighten out, but with the wind being perfect, it's worth the look.
The middle of the next week gets a bit wild. Tuesday, September 8th, the swell is predicted to be way too big for this break, with a massive 12ft S swell (combined energy of 3250). That's expert-only territory, and even then, the break might not handle it. A few days later, on Sunday, September 13th, we get another big pulse of groundswell, 8ft to 8ft from the SSE with a very long 14 to 13-second period. The combined energy (2064 to 2440) is huge, but the wind is onshore, making it messy. The long period and big size mean it's only for the very experienced, and the onshore wind is a real bummer.
So the call is this: the best chance for a decent session on clean, manageable waves is the morning of Monday, September 7th. That's your window. The rest is either too small, too big, or too windy.
Stay stoked, and I'll catch you in the lineup.
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Sat morning. Warm (max 26°C on Mon afternoon, min 22°C on Sat afternoon). Winds decreasing (fresh winds from the NNE on Sat afternoon, calm by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Thu afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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 | SSW 7 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSE 10 | SSE 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | SSW 11 | S 10 | SSE 7 | S 7 | S 7 | SSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 18 | 18 | 12 | 11 | 11 | 11 | 9 | 9 | 15 | 15 | 16 | 16 | 24 | 29 | 49 | 90 | 186 | 68 | 431 | 261 | 144 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross-on | glassy | on | cross-on | cross-off | cross-on | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 5:46PM1.49m | 5:33AM1.50m | 6:05PM1.51m | 6:13AM1.47m | 6:25PM1.51m | 6:56AM1.40m | 6:47PM1.51m | 7:44AM1.31m | 7:09PM1.49m | 8:44AM1.20m | 7:34PM1.45m | 10:22AM1.10m | 8:03PM1.40m | ||||||||
Low Tide | 11:22AM0.24m | 11:38PM0.52m | 11:50AM0.32m | 00:10AM0.43m | 12:17PM0.43m | 00:44AM0.36m | 12:44PM0.57m | 1:22AM0.32m | 1:10PM0.72m | 2:06AM0.32m | 1:35PM0.87m | 3:03AM0.35m | 1:53PM1.01m | ||||||||
 | |  |  | |  | | | | |  |  | | | | | | | |  |  | |
 | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — |
 | — | 6:15 | — | — | 6:14 | — | — | 6:12 | — | — | 6:10 | — | — | 6:08 | — | — | 6:07 | — | — | 6:07 | — |
mm | 1 | 1 | 1 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 2 | 12 | 58 |
Temp °C | 24 | 22 | 22 | 24 | 25 | 24 | 25 | 26 | 25 | 27 | 28 | 27 | 28 | 28 | 27 | 29 | 30 | 27 | 25 | 24 | 22 |
Feels °C | 27 | 20 | 21 | 26 | 28 | 27 | 28 | 28 | 28 | 30 | 32 | 31 | 30 | 30 | 30 | 30 | 31 | 30 | 27 | 26 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 8 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | SSW 11 | SW 12 | SSE 7 | SSW 10 | S 7 | SSW 9 |
| kJ | 18 | 18 | 11 | 11 | 11 | 11 | 5 | 6 | 15 | 15 | 16 | 16 | 24 | 29 | 49 | 90 | 38 | 68 | 231 | 261 | 144 |
Swell 2 Height (m) Direction Period (s) | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SE 9 | SE 10 | SE 10 | SE 10 | ESE 7 | SE 7 | SSE 6 | E 9 | SSW 11 | SSE 8 | SSW 10 | SE 12 |
| kJ | 11 | 12 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 3 | 4 | 4 | 4 | 5 | 16 | 27 | 16 | 66 | 74 | 71 | 5 |
Swell 3 Height (m) Direction Period (s) | — | SSW 8 | SSW 8 | E 6 | E 6 | — | E 14 | E 13 | — | E 12 | ESE 12 | ESE 11 | SE 7 | SE 9 | SE 9 | SW 12 | — | E 11 | — | S 12 | SSE 12 |
| kJ | — | 12 | 12 | 3 | 3 | — | 4 | 3 | — | 3 | 13 | 11 | 2 | 3 | 3 | 6 | — | 9 | — | 3 | 13 |
Wind waves Height (m) Direction Period (s) | — | NE 2 | NNE 3 | — | — | — | — | — | — | — | — | — | — | — | S 3 | — | S 10 | SSW 7 | S 7 | NW 3 | N 4 |
| kJ | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 186 | 47 | 431 | 4 | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 62 | 76 | 101 | 76 | 101 | 81 | 81 | 76 | 12 | 41 | 41 | 12 | 76 | 77 | 0 | 13 | 77 | 0 | 0 | 12 | 119 |
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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