Surf Forecasts:
Hanamizu River surf forecast from 5 Aug 2026:
- Best quality surf: Thursday 6 Aug, 9PM (local time) - 6.5ft (2.0m), 14s period, S swell with glassy winds.
- Most powerful swell: Thursday 6 Aug, 9PM (local time) - 6.5ft (2.0m), 14s period, S swell with 1,497 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 9PM (local time) - 6.5ft (2.0m), 14s 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 Thursday (Aug 06) at 9PM. The primary swell is predicted to be 2.0m and 14s period with a secondary swell of 0.8m and 10s. 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 2.0m 14s and forecast to arrive on Thursday (Aug 06) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Wednesday (Aug 12) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 6th Aug) | 6.5ft (2.0m) 14s |
| Best Surf | 9PM (Thu 6th Aug) | 6.5ft (2.0m) 14s |
| Most Powerful | 9PM (Thu 6th Aug) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, Rusty here again, looking at the same picture but in feet and miles. It’s a tough one for Hanamizu River over the next 16 days. There’s a real drought of decent surf.
The week starts off with some size on Thursday the 6th, around 6ft from the SSE, but the wind is a real problem. It’s mostly cross or cross-on, making the surface ugly and choppy. The combined energy of all swells is high, at 1131, but that’s wasted on messy conditions. The water temp is about what you’d expect for this time of year.
From there, it’s a long, slow slide into nothing. The swell drops fast, and by Saturday the 8th, we’re looking at 4ft, and it just keeps shrinking. The wind stays bad, and the wave quality is consistently poor. There’s a massive gap from the 8th all the way through to the 19th of August where the forecast is almost all “poor surf conditions.” The swell energy crashes from 475 down to a pathetic 24, so it’s not just small, it’s dead.
The only session that’s even worth a mention is Wednesday the 19th of August, in the afternoon. We’re looking at a tiny 1ft from the SSW, with a period of 11 seconds, but the wind goes cross-off, cleaning it up. The energy is only 86, so it’s weak, but it’s the only “surfable” slot in the whole run. It’s not a standout, it’s just the only option.
To be straight with you, this is a good time to find something else to do. The river can work when it gets a good swell and clean wind, but this forecast is a total bust. If you’re itching for a paddle, the 19th afternoon is your only chance, but keep your expectations real low.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu morning. Warm (max 29°C on Thu morning, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sun afternoon, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
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) | SSE 14 | SSE 13 | S 13 | S 14 | S 13 | S 13 | S 13 | S 12 | SSW 12 | SSW 12 | SW 14 | SSW 14 | SW 15 | SSW 12 | SSW 11 | SSW 12 | SSW 12 | SSW 12 | SSW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 1387 | 1025 | 942 | 1332 | 976 | 961 | 713 | 513 | 454 | 386 | 189 | 378 | 145 | 150 | 130 | 152 | 164 | 167 | 158 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | glassy | on | cross-on | cross-on | on | cross-on | glassy | cross-on | cross-on | cross | cross | on | cross | cross-on | cross | cross-off |
High Tide | 10:12AM1.09m | 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 | ||||||||
Low Tide | 3:38AM0.47m | 2:45PM0.88m | 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 | |||||||
 |  |  |  | | | | | | |  | | | | | | | |  | |
 | — | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — |
 | 6:43 | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 28 | 29 | 29 | 27 | 29 | 29 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 29 | 29 | 25 | 27 | 29 | 27 |
Feels °C | 31 | 32 | 32 | 31 | 32 | 31 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 26 | 28 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SSE 14 | SSE 13 | S 13 | S 14 | S 13 | S 13 | S 13 | S 12 | SSW 12 | SSW 12 | SW 14 | SSW 14 | S 11 | SSW 12 | SSW 11 | SSW 12 | SSW 12 | SSW 12 | SSW 12 |
| kJ | 1387 | 1025 | 942 | 1332 | 976 | 961 | 713 | 513 | 454 | 386 | 189 | 378 | 121 | 150 | 130 | 152 | 164 | 167 | 158 |
Swell 2 Height (m) Direction Period (s) | — | ESE 10 | ESE 11 | ESE 10 | ESE 11 | ESE 9 | SE 12 | ESE 12 | ESE 12 | ESE 12 | S 12 | SSW 12 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SE 13 | SE 13 |
| kJ | — | 106 | 11 | 114 | 12 | 133 | 6 | 14 | 13 | 30 | 141 | 49 | 145 | 75 | 52 | 31 | 7 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 15 | E 15 | SE 13 | SE 12 | SE 12 | SE 12 | ESE 12 | ESE 13 | ESE 12 | E 12 | E 11 | E 11 | SE 13 | S 10 | S 10 |
| kJ | — | — | — | — | 4 | 4 | 6 | 6 | 6 | 5 | 30 | 34 | 15 | 11 | 10 | 9 | 6 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SSE 8 | — | — | S 3 | — | — | — | — | — | — | NE 3 | NNE 2 | WSW 3 | N 3 |
| kJ | — | — | — | — | — | 91 | — | — | 2 | — | — | — | — | — | — | 2 | 1 | 2 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 33 | 27 | 36 | 0 | 36 | 36 | 36 | 27 | 36 | 0 | 19 | 36 | 10 | 123 | 33 | 10 | 13 | 253 | 0 |
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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