Surf Forecasts:
Hanamizu River surf forecast from 2 Aug 2026:
- Best quality surf: Friday 7 Aug, 6AM (local time) - 8ft (2.5m), 16s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 6 Aug, 3PM (local time) - 10ft (3.0m), 16s period, S swell with 4,320 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 6AM (local time) - 8ft (2.5m), 16s 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 2.5m and 16s period. 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 Thursday (Aug 06) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Wednesday (Aug 05) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 7th Aug) | 8ft (2.5m) 16s |
| Best Surf | 6AM (Fri 7th Aug) | 8ft (2.5m) 16s |
| Most Powerful | 3PM (Thu 6th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what's on the cards for the next couple of weeks.
We've got a slow start, but a real pulse of swell builds in the middle of the first week. The water's running about 82°, which is a tad warmer than normal for this time of year, so shorts and a spring suit should be fine.
Sunday (August 2nd) and Monday (August 3rd) are a total bust. The swell is tiny and weak, with poor conditions. You're better off waiting.
Tuesday (August 4th) is where the tide starts to turn. The swell kicks up, and the winds go clean and cross-off from the NNE. The wave energy climbs into the moderate range, but the surf quality is still just marginal. The swell is out of the SE, which works here.
The standout window is Wednesday (August 5th) through Thursday (August 6th). Wednesday morning sees 8ft swell from the SSE with clean, offshore winds, and it holds at 10ft through Thursday morning (combined energy of 4010). This is a serious, heavy swell. It's too big for beginners and only for the experienced crew. On Thursday afternoon, the wind turns onshore, putting a bit of a chop on it.
The absolute best of the run is Saturday (August 8th) afternoon. The swell drops back to a solid 6ft from the SSW, and the wind goes glassy. That's a magic ticket. The call is for excellent surf conditions for experienced surfers. The crowds are listed as "sometimes," so you might have a few others with the same idea, but it'll be worth it.
After that peak, the swell fades fast through the second week. The second week is a downer, with small, weak swell and strong, clean winds that do nothing for the waves. From August 9th onward, the wave energy is well under 1000, and by the 13th, it's barely a ripple. It's a classic case of a lot of wind and not enough wave to make it worth paddling out.
So, to call it: The best bet is the Thursday (August 6th) morning for the big, clean swell if you're an expert, or the Saturday (August 8th) afternoon for the glassy, quality session at a more manageable size.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Sun morning, min 22°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Thu night. Warm (max 30°C on Fri morning, min 25°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | |||||||||||||||
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) | ESE 16 | SE 15 | ESE 15 | SE 16 | SE 16 | SE 17 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 16 | SSE 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | SSW 15 | SSW 15 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 99 | 104 | 148 | 258 | 448 | 648 | 1055 | 1415 | 2709 | 3499 | 3908 | 4058 | 4010 | 4320 | 3891 | 2925 | 2374 | 1963 | 1613 | 1623 | 1200 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross | cross | on | cross-off | cross | glassy | cross |
High Tide | 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 | 3:24PM1.19m | 11:07PM1.33m | ||||||||
Low Tide | 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 | 6:23AM0.36m | 5:48PM1.18m | ||||||||
 | |  | | |  |  | |  |  | | | |  |  |  | | | | | | |
 | 4:50 | — | — | 4:52 | — | — | 4:52 | — | — | 4:54 | — | — | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — |
 | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 9 | 1 | — | — | 3 | 3 | 3 |
Temp °C | 31 | 31 | 26 | 26 | 27 | 25 | 28 | 28 | 24 | 26 | 28 | 26 | 29 | 29 | 27 | 30 | 29 | 27 | 28 | 28 | 26 |
Feels °C | 35 | 34 | 27 | 25 | 26 | 23 | 26 | 26 | 22 | 24 | 27 | 26 | 30 | 31 | 30 | 32 | 31 | 30 | 29 | 32 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 16 | SE 15 | ESE 15 | SE 16 | SE 16 | SE 17 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 16 | SSE 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | SSW 15 | SSW 15 | SSW 15 |
| kJ | 99 | 104 | 148 | 258 | 448 | 648 | 1055 | 1415 | 2709 | 3499 | 3908 | 4058 | 4010 | 4320 | 3891 | 2925 | 2374 | 1963 | 1613 | 1623 | 1200 |
Swell 2 Height (m) Direction Period (s) | SSW 5 | SE 9 | SSW 6 | SE 22 | S 8 | E 14 | E 14 | E 13 | — | — | — | — | — | ESE 10 | ESE 10 | — | — | SE 9 | SE 9 | SE 8 | ESE 12 |
| kJ | 5 | 3 | 3 | 18 | 1 | 4 | 4 | 3 | — | — | — | — | — | 86 | 103 | — | — | 412 | 290 | 256 | 13 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 7 | SE 9 | S 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 6 | ENE 2 | NE 3 | NE 3 | NE 3 | NNE 3 | NE 3 | — | NNE 4 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | 2 | 5 | 5 | 7 | 10 | 9 | — | 34 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 19 | 36 | 59 | 123 | 527 | 465 | 123 | 465 | 465 | 463 | 2191 | 19 | 19 | 19 | 10 | 10 | 36 | 0 | 19 | 0 | 10 |
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