Surf Forecasts:
Hanamizu River surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 9AM (local time) - 2.5ft (0.7m), 10s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 12 Aug, 9AM (local time) - 2.5ft (0.7m), 10s period, SSW swell with 106 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 9AM (local time) - 2.5ft (0.7m), 10s 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 Wednesday (Aug 12) at 9AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.1m and 13s. 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 0.7m 10s and forecast to arrive on Wednesday (Aug 12) 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 0.8m 4s period and expected on Sunday (Aug 16) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 12th Aug) | 2.5ft (0.7m) 10s |
| Best Surf | 9AM (Wed 12th Aug) | 2.5ft (0.7m) 10s |
| Most Powerful | 9AM (Wed 12th Aug) | 2.5ft (0.7m) 10s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, let’s size this up. The whole 16-day window for Hanamizu River is a dry spell. Not a single session gets a thumbs-up. That’s a long stretch with nothing, and it’s the kind of quiet period that’s normal for this spot when the swell direction and wind don’t play ball.
The first week is all small stuff. Swell is 1.0 to 2 feet, period 8 to 11 seconds, with cross-off, cross, or cross-on winds. The combined energy is weak, running from 21 to 130 (moderate at best), but every wave comment is “poor surf conditions” or “surfable waves but very ordinary conditions.” Nothing to get excited about.
The second week shows a little more pulse. On August 25th, the swell hits 2 feet from the SSE, period 11 seconds, with combined energy of 127 (moderate). Still, the wind is cross or cross-on, and the comment is “poor surf conditions.” On August 26th, the swell builds to 5 feet from the SSE, period 11 seconds, and the combined energy jumps to 559 (strong). That’s the biggest swell of the window, but it’s got a moderate cross-onshore breeze at 15 mph, and the comment is “poor surf conditions.” At that size, with that wind, this beach-and-sandbar break would be a washing machine. It’s more setup for kite surfing than paddle surfing.
The only clean moments are the glassy mornings. On August 16th, glassy with 1 feet from the ESE, period 11 seconds, combined energy 83 (weak). On August 20th, glassy again with 2 feet from the SSE, period 8 seconds, combined energy 65 (weak). On August 24th, glassy with 1.0 feet from the SSW, period 8 seconds, combined energy 18 (weak). These are the cleanest conditions, but the swell is too small to surf. The morning of August 20th is the best of the bunch, but it’s a session for a longboard or a soft-top, nothing with any push.
The water temperature at the start is 82°F, with an anomaly of 1°F. That’s about average for the time of year.
It’s a rough run. The break is fairly consistent, but the swell and wind just aren’t lining up. Forecasts can change, but right now, there’s nothing to recommend.
Rusty.
Short Range ForecastHeavy rain (total 37mm), heaviest during Tue night. Warm (max 29°C on Fri morning, min 23°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 16mm), heaviest on Fri afternoon. Warm (max 28°C on Fri afternoon, min 24°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 11 | SSW 6 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | S 10 | SSW 9 | SSW 9 | SSE 10 | SE 9 | S 11 | SSW 10 | SE 11 | ESE 11 | SSW 11 | SSW 9 | SSW 10 | SSW 9 | SSW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 64 | 93 | 106 | 59 | 39 | 38 | 47 | 28 | 28 | 21 | 27 | 22 | 35 | 32 | 50 | 37 | 29 | 30 | 28 | 15 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | cross-off | cross | cross | cross-off | glassy | on | cross-off | on | cross-on | cross-off |
High Tide | 5:04PM1.45m | 3:16AM1.49m | 5:31PM1.47m | 4:10AM1.55m | 5:55PM1.48m | 4:59AM1.57m | 6:17PM1.48m | 5:45AM1.54m | 6:38PM1.48m | 6:30AM1.47m | 6:58PM1.47m | 7:14AM1.36m | 7:18PM1.46m | |||||||
Low Tide | 10:06PM0.99m | 10:28AM0.00m | 10:44PM0.87m | 11:08AM0.03m | 11:20PM0.74m | 11:43AM0.11m | 11:56PM0.62m | 12:15PM0.24m | 00:33AM0.52m | 12:43PM0.39m | 1:10AM0.46m | 1:08PM0.55m | 1:49AM0.43m | |||||||
 |  |  |  |  |  |  |  | |  | |  | |  | | |  | | | | |
 | — | — | 4:58 | — | — | 5:00 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — |
 | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:30 | — | — | 6:30 | — |
mm | — | 24 | 4 | 4 | 1 | — | 1 | 2 | 1 | 9 | 7 | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 25 | 25 | 24 | 28 | 28 | 26 | 29 | 28 | 26 | 27 | 28 | 25 | 26 | 27 | 27 | 28 | 29 | 27 |
Feels °C | 28 | 26 | 27 | 27 | 25 | 29 | 30 | 29 | 31 | 30 | 28 | 27 | 28 | 24 | 28 | 29 | 30 | 30 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 5 | SSW 10 | SSE 5 | S 6 | SSW 10 | S 10 | SSW 9 | SSW 9 | SSW 9 | SE 9 | SE 8 | SSW 10 | SSW 10 | ESE 11 | SSW 11 | SSW 9 | SSW 10 | SSW 9 | SSW 9 |
| kJ | 64 | 37 | 106 | 23 | 23 | 38 | 47 | 28 | 28 | 16 | 20 | 17 | 35 | 32 | 50 | 37 | 29 | 30 | 28 | 15 |
Swell 2 Height (m) Direction Period (s) | E 11 | SSW 10 | SE 13 | SSW 10 | SSW 10 | S 5 | E 10 | S 12 | SSE 12 | SSE 10 | SSW 9 | SSW 9 | SE 8 | SE 11 | SSW 9 | ESE 11 | SE 11 | SE 11 | SE 11 | SE 10 |
| kJ | 2 | 58 | 6 | 59 | 39 | 5 | 2 | 11 | 13 | 21 | 27 | 15 | 16 | 30 | 28 | 12 | 5 | 5 | 5 | 4 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 10 | SE 12 | SE 12 | SE 11 | SE 12 | SE 12 | SE 10 | SE 10 | E 10 | S 11 | ESE 11 | SSE 10 | SE 12 | SE 11 | E 10 | E 9 | SE 8 | S 8 |
| kJ | 6 | 6 | 4 | 6 | 5 | 5 | 5 | 5 | 4 | 4 | 2 | 22 | 11 | 10 | 5 | 5 | 2 | 2 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | SSW 3 | SSW 6 | ESE 2 | ESE 5 | — | NE 2 | — | — | NE 3 | ENE 2 | — | NE 2 | ENE 3 | NE 3 | N 4 | N 4 | N 3 | N 3 | — | SSW 3 |
| kJ | 4 | 93 | 1 | 42 | — | 1 | — | — | 2 | 1 | — | 1 | 3 | 7 | 17 | 18 | 5 | 1 | — | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 12 | 112 | 0 | 0 | 0 | 59 | 20 | 12 | 59 | 59 | 12 | 123 | 36 | 3 | 0 | 12 | 12 | 12 | 104 | 77 |
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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