Surf Forecasts:
Hanamizu River surf forecast from 6 Aug 2026:
- Best quality surf: Friday 7 Aug, 6AM (local time) - 5.5ft (1.7m), 13s period, S swell with glassy winds.
- Most powerful swell: Friday 7 Aug, 6AM (local time) - 5.5ft (1.7m), 13s period, S swell with 958 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 6AM (local time) - 5.5ft (1.7m), 13s 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 Friday (Aug 07) at 6AM. The primary swell is predicted to be 1.7m and 13s period with a secondary swell of 0.2m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hanamizu River in the next 16 days are 1.7m 13s and forecast to arrive on Friday (Aug 07) at 6AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 7th Aug) | 5.5ft (1.7m) 13s |
| Best Surf | 6AM (Fri 7th Aug) | 5.5ft (1.7m) 13s |
| Most Powerful | 6AM (Fri 7th Aug) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Grab your board, but maybe leave the quiver in the shed for a bit. The next stretch is looking pretty darn slow for Hanamizu River (Japan). We’ve got a long, flat spell on the horizon, so don’t get your hopes up for any heroics just yet.
The forecast kicks off with a pulse of energy on Friday morning, August 7th. We’re looking at a 5ft south swell with a 13-second period, and the energy is moderate at 990. The wind is light and offshore, which is a plus, but the conditions are described as marginal. It might be worth a quick check, but don’t expect much. That swell fades fast, dropping to 5ft by the afternoon with cross-onshore winds, and it’s all downhill from there.
We’re in for a serious dry spell. From Saturday, August 8th, through to around Wednesday, August 19th, there’s basically nothing on offer. The swell drops to under 3ft and the energy plummets. There are a few glassy mornings, like on Thursday the 13th and Sunday the 16th, but with waves around 2ft to 2ft, it’s just not worth the paddle. This is a real desert stretch.
The first glimmer of hope arrives on Friday morning, August 21st. The swell ticks back up to 2ft from the south with a 12-second period, and the wind is glassy. The energy is back into the low 100s (141), which is weak, but at least it’s a sign of life. Saturday morning, August 22nd, keeps that trend going with a 2ft south swell and a clean offshore breeze (113 energy). It’s still tiny, but it’s the best we’ve seen in a while. These are not standouts by any means, just the first hint that the ocean is waking up. Keep the faith, but don’t rearrange your life for it.
The water temp is running about average for this time of year, so a thin wetsuit should be fine.
Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Fri morning, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Wed afternoon. Warm (max 31°C on Tue afternoon, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
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 14 | S 13 | S 12 | S 11 | S 11 | S 11 | SSW 11 | S 10 | SSW 11 | SSW 10 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 11 | SSW 11 | SSW 11 | SW 11 | SSW 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 1294 | 810 | 625 | 485 | 295 | 242 | 198 | 100 | 117 | 108 | 95 | 91 | 58 | 63 | 68 | 93 | 68 | 33 | 63 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross | cross-on | cross | cross-off | cross-on | cross-off | cross-off | cross-on | cross |
High Tide | 9:05PM1.40m | 12:46PM1.07m | 9:50PM1.36m | 3:24PM1.19m | 11:07PM1.33m | 4:05PM1.31m | 00:49AM1.35m | 4:36PM1.39m | 2:12AM1.41m | 5:04PM1.45m | 3:16AM1.49m | 5:31PM1.47m | |||||||
Low Tide | 4:53AM0.43m | 3:24PM1.05m | 6:23AM0.36m | 5:48PM1.18m | 7:47AM0.25m | 8:17PM1.17m | 8:52AM0.13m | 9:22PM1.10m | 9:44AM0.04m | 10:06PM0.99m | 10:28AM0.00m | 10:44PM0.87m | |||||||
 |  | | | | | | |  |  | | | | | | | |  |  | |
 | — | 4:54 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — |
 | 6:42 | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 69 |
Temp °C | 27 | 29 | 29 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 27 | 27 | 26 | 30 | 31 | 27 | 29 | 27 | 25 |
Feels °C | 31 | 31 | 31 | 29 | 30 | 30 | 29 | 31 | 30 | 29 | 29 | 29 | 26 | 30 | 31 | 26 | 31 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | S 12 | S 11 | S 11 | S 11 | SSW 11 | S 10 | SSW 11 | SSW 10 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SSW 10 |
| kJ | 1294 | 810 | 625 | 485 | 295 | 242 | 198 | 100 | 117 | 108 | 95 | 91 | 58 | 63 | 68 | 93 | 68 | 33 | 63 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 9 | SE 9 | SE 12 | ESE 11 | ESE 12 | ESE 12 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | SE 12 | SW 12 | SE 12 | SE 10 | SW 11 | S 3 |
| kJ | 114 | 176 | 21 | 6 | 11 | 13 | 28 | 34 | 34 | 15 | 14 | 12 | 12 | 6 | 6 | 6 | 4 | 31 | 1 |
Swell 3 Height (m) Direction Period (s) | — | E 15 | E 15 | E 15 | SE 12 | SE 12 | ESE 15 | SW 11 | SE 12 | SW 12 | SW 12 | SE 11 | SE 11 | SW 12 | SE 12 | E 10 | SE 13 | SE 12 | SE 10 |
| kJ | — | 4 | 4 | 4 | 6 | 6 | 21 | 19 | 5 | 5 | 6 | 5 | 5 | 5 | 6 | 2 | 7 | 6 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | SE 9 | — | — | S 3 | — | — | — | — | — | — | — | — | SSW 2 | S 3 | S 3 | SSE 3 | — |
| kJ | — | — | 217 | — | — | 1 | — | — | — | — | — | — | — | — | 1 | 2 | 1 | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 62 | 36 | 62 | 12 | 36 | 12 | 19 | 36 | 0 | 10 | 23 | 19 | 119 | 77 | 12 | 0 | 19 | 112 |
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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