Surf Forecasts:
Hanamizu River surf forecast from 1 Aug 2026:
- Best quality surf: Friday 7 Aug, 3AM (local time) - 8ft (2.5m), 15s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 6PM (local time) - 10ft (3.0m), 16s period, SSE swell with 4,483 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 6AM (local time) - 1.5ft (0.4m), 15s period with SE 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 Sunday (Aug 02) at 6AM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.3m and 5s. 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 3.0m 16s and forecast to arrive on Wednesday (Aug 05) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Tuesday (Aug 04) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sun 2nd Aug) | 1.5ft (0.4m) 15s |
| Best Surf | 3AM (Fri 7th Aug) | 8ft (2.5m) 15s |
| Most Powerful | 6PM (Wed 5th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a long window ahead, but we’re going to have to be patient for the first few days at Hanamizu River. The good news is there’s a proper pulse of energy coming, but it comes with a catch.
Right now, conditions are flat and glassy with a tiny 1ft SSE swell, but it’s just not doing anything. The water is a warm 81°, which is about normal for this time of year, so no surprises there. The first few days are a write-off – light winds and poor surf, nothing to paddle for.
It’s not until Monday, August 3rd, that we start to see a change. The swell ticks up to 2ft from the SE with a long 16-second period, and the wind goes clean cross-off from the NNE. Still very marginal, but the energy is building (267 combined energy). By Tuesday morning, August 4th, we’ve got a solid 5ft SE swell with that same long 16-second period, clean cross-off winds, and the energy is really humming at 1137. This is where it starts to get interesting for the more experienced crew. The wave shape will be good, but that long period groundswell can make it a bit straight at a beach/sandbar setup like this, so pick your peak.
The standout window is Wednesday, August 5th, through to Thursday, August 6th. This is the best on offer. Wednesday morning brings an 8ft SSE swell with a 16-second period, cross-off winds, and a massive 3444 combined energy. This is big, powerful, and clean. It’s for experts only – over 8ft is no joke. Thursday morning holds a similar 10ft S swell, still with that 16-second period, clean cross-off winds, and the energy peaks at 4457. If you’re an experienced surfer and you’ve got a big board, these are the days. The crowds are listed as “sometimes,” so expect a few others with the same idea, but it won’t be a circus.
From Friday, August 7th, the swell starts to drop, and the wind gets messy, switching sideshore and onshore. By Sunday, August 9th, we’re back down to a 4ft SSW swell with a shorter 13-second period, and the wind is a messy cross-shore. The energy fades fast (490). It’s a steady decline from there, with the rest of the second week offering nothing but tiny, choppy leftovers. The gap from August 8th onward is basically a week of flat, poor conditions with no real recommendations.
So, to wrap it up: the first few days are a bust. Then Monday the 3rd is a tease. The real magic is Wednesday, August 5th, and Thursday, August 6th – big, clean, long-period S/SSE swell for the charger crew. Everything after that is a slow fade to nothing. That’s the story, plain and simple.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat afternoon. Warm (max 31°C on Sun morning, min 23°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Thu night. Warm (max 30°C on Thu morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | |||||||||||||||
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 6 | SE 17 | ESE 16 | SE 15 | ESE 15 | SE 16 | ESE 16 | SE 17 | SE 17 | SE 17 | SE 16 | SSE 16 | SSE 16 | SSE 16 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 9 | 14 | 46 | 99 | 104 | 148 | 261 | 452 | 633 | 1133 | 1575 | 2527 | 3444 | 4006 | 4288 | 4401 | 3955 | 2987 | 2789 | 2601 | 1787 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | glassy | cross-on | on | cross | cross | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross | on | cross |
High Tide | 6:56PM1.46m | 6:18AM1.43m | 7:18PM1.46m | 7:00AM1.37m | 7:41PM1.46m | 7:48AM1.28m | 8:05PM1.45m | 8:47AM1.18m | 8:33PM1.43m | 10:12AM1.09m | 9:05PM1.40m | 12:46PM1.07m | 9:50PM1.36m | ||||||||
Low Tide | 12:19PM0.20m | 00:38AM0.68m | 12:47PM0.29m | 1:15AM0.61m | 1:15PM0.41m | 1:55AM0.55m | 1:44PM0.55m | 2:41AM0.50m | 2:14PM0.72m | 3:38AM0.47m | 2:45PM0.88m | 4:53AM0.43m | 3:24PM1.05m | ||||||||
 |  |  |  | |  |  | |  | | | | | |  | | |  | |  | | |
 | 4:50 | — | — | 4:50 | — | — | 4:52 | — | — | 4:52 | — | — | 4:54 | — | — | 4:54 | — | — | 4:54 | — | — |
 | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — |
mm | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 1 | 1 | 5 |
Temp °C | 30 | 30 | 29 | 31 | 30 | 26 | 24 | 25 | 25 | 28 | 29 | 25 | 26 | 28 | 27 | 30 | 30 | 27 | 30 | 29 | 26 |
Feels °C | 33 | 34 | 34 | 34 | 33 | 26 | 23 | 24 | 23 | 26 | 27 | 24 | 25 | 28 | 28 | 31 | 32 | 30 | 32 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SE 15 | SSW 6 | ESE 16 | SE 15 | ESE 15 | SE 16 | ESE 16 | SE 17 | SE 17 | SE 17 | SE 16 | SSE 16 | SSE 16 | SSE 16 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 |
| kJ | 9 | 8 | 11 | 99 | 104 | 148 | 261 | 452 | 633 | 1133 | 1575 | 2527 | 3444 | 4006 | 4288 | 4401 | 3955 | 2987 | 2789 | 2601 | 1787 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 18 | SE 17 | S 5 | S 6 | SE 9 | S 8 | S 8 | E 14 | E 14 | E 13 | — | — | — | — | E 10 | E 11 | SE 10 | ESE 11 | ESE 10 | ESE 10 |
| kJ | 4 | 12 | 46 | 5 | 7 | 3 | 1 | 1 | 4 | 4 | 3 | — | — | — | — | 56 | 57 | 4 | 11 | 78 | 192 |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 9 | SE 9 | SE 9 | SE 9 | SW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 13 |
| kJ | 9 | 3 | 3 | 3 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 |
Wind waves Height (m) Direction Period (s) | — | SSW 6 | — | — | S 6 | ENE 3 | NE 3 | E 7 | NE 3 | NE 3 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 14 | — | — | 18 | 3 | 5 | 23 | 7 | 9 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 76 | 43 | 10 | 36 | 23 | 19 | 59 | 19 | 123 | 123 | 36 | 465 | 527 | 19 | 19 | 19 | 33 | 10 | 33 | 36 | 19 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Hanamizu River surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest