Surf Forecasts:
Hanamizu River surf forecast from 21 Jul 2026:
- Best quality surf: Thursday 23 Jul, 3AM (local time) - 3ft (0.9m), 6s period, SW swell with offshore winds.
- Most powerful swell: Thursday 23 Jul, 3AM (local time) - 3ft (0.9m), 6s period, SW swell with 46 kJ wave energy.
- Next surfable swell (1★+): Thursday 23 Jul, 3AM (local time) - 3ft (0.9m), 6s period with SW 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 (Jul 23) at 3AM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.6m and 5s. Another secondary swell of 0.1m and 11s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Hanamizu River in the next 16 days are 0.9m 6s and forecast to arrive on Thursday (Jul 23) at 3AM. Winds are predicted to be offshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 23rd Jul) | 3ft (0.9m) 6s |
| Best Surf | 3AM (Thu 23rd Jul) | 3ft (0.9m) 6s |
| Most Powerful | 3AM (Thu 23rd Jul) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin' over the next couple of weeks.
Honestly, it’s a pretty flat spell for a while. The first solid week or so has nothing worth paddling out for. We’re looking at a real dry run from now until the end of July, with almost nothing but tiny, weak, and choppy conditions. There’s a long gap with no real surf on offer, so don't be in a rush to wax up.
The first real glimmer of hope shows up right at the start of August. We’ve got a bit of a pulse coming through on Saturday the 1st. Hanamizu River (beach/sandbar) will see a bump in swell up to 3ft from the SSE. The combined energy is moderate (326), so there’s a bit of push there, but the wind is cross-onshore, so it’ll be a bit lumpy. It’s still marginal, but it’s the first sign of life.
Sunday the 2nd looks a touch better for the early session. The swell picks up to 4ft from the south with a 13-second period, which is a nice, long groundswell. The combined energy is strong (517). The wind is light and onshore in the morning, but it’s glassy with a slight air – that’s a major positive for clean surf. This is probably the best on offer for the whole run, but it’s still rated as marginal, so don’t expect perfection.
Monday the 3rd of August sees the swell building further. Morning sessions have 5ft from the south with clean, light onshore winds. The energy is strong (696). By the afternoon, it’s pushing 6ft, which is getting solid for the river mouth, but the wind stays cross-onshore and the score is still a bit low. The water temp is around 80°, which is pretty average for this time of year.
Tuesday the 4th drops back a notch, with 5ft from the SSW in the morning, again with light cross-onshore breezes. The energy is still strong (988). It’s another marginal day, but the swell direction is shifting.
By Wednesday the 5th of August, it’s fading again, down to 3ft, and the window closes. The wind is onshore and it’s all over.
So, the standout is that Sunday the 2nd of August morning. That 4ft south groundswell with the glassy conditions is the cleanest you’ll see. The water is normal temp for the season. It’s a fairly consistent spot, and since it’s a beginner-friendly break, it might be a bit crowded if the word gets out. For the rest, it’s a waiting game.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu night. Warm (max 32°C on Thu afternoon, min 26°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 25mm), heaviest during Sun night. Warm (max 28°C on Fri afternoon, min 23°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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 4 | SSW 4 | SSW 4 | S 4 | SSW 5 | SSW 6 | SSW 6 | SSE 10 | SSE 9 | SSE 9 | SE 11 | SE 10 | SE 10 | SSE 15 | SE 15 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 12 | 11 | 12 | 6 | 19 | 15 | 8 | 12 | 12 | 11 | 18 | 15 | 15 | 22 | 8 | 18 | 20 | 16 | 16 | 16 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | cross-on | cross-off | cross | cross-on | glassy | on | cross-on | cross | cross | cross | cross | glassy | cross-on | glassy | glassy | cross-on | cross-off |
High Tide | 9:12PM1.37m | 10:59AM1.01m | 9:42PM1.35m | 1:53PM1.02m | 10:23PM1.31m | 4:27PM1.11m | 11:26PM1.28m | 4:24PM1.19m | 00:48AM1.28m | 4:44PM1.26m | 1:59AM1.31m | 5:07PM1.31m | 2:54AM1.37m | |||||||
Low Tide | 4:27AM0.55m | 3:05PM0.90m | 5:40AM0.52m | 3:14PM1.02m | 6:57AM0.47m | 5:02PM1.11m | 8:03AM0.40m | 7:57PM1.13m | 8:56AM0.32m | 9:09PM1.09m | 9:39AM0.25m | 9:52PM1.04m | ||||||||
 |  |  | |  | | | | |  | |  | |  | |  |  | | | | |
 | — | — | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — |
 | 6:54 | — | — | 6:53 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — |
mm | — | 2 | — | — | — | — | — | 4 | — | 1 | 5 | 1 | 1 | 1 | — | 4 | 11 | 1 | 3 | 3 |
Temp °C | 31 | 29 | 30 | 31 | 29 | 31 | 32 | 28 | 28 | 28 | 27 | 25 | 25 | 24 | 25 | 25 | 24 | 26 | 27 | 26 |
Feels °C | 35 | 33 | 35 | 36 | 33 | 35 | 36 | 33 | 32 | 31 | 32 | 27 | 27 | 25 | 28 | 27 | 28 | 29 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SSW 4 | SE 8 | SE 11 | SSW 6 | SSW 6 | S 5 | SSE 9 | SSE 9 | SE 11 | SE 10 | SE 10 | SE 10 | SE 15 | SE 11 | S 9 | SSE 4 | SSW 8 | SSW 8 |
| kJ | 3 | 2 | 6 | 2 | 5 | 13 | 8 | 2 | 8 | 8 | 18 | 15 | 15 | 15 | 8 | 18 | 13 | 3 | 14 | 14 |
Swell 2 Height (m) Direction Period (s) | E 11 | SE 11 | SE 8 | SE 11 | S 7 | SSE 10 | SE 10 | SSE 10 | S 8 | SSW 7 | SE 16 | SE 16 | SE 16 | SSE 4 | SE 11 | SE 15 | SE 11 | SSW 9 | SE 10 | SE 10 |
| kJ | 2 | 4 | 2 | 5 | 1 | 10 | 4 | 9 | 4 | 5 | 10 | 10 | 10 | 1 | 5 | 8 | 18 | 15 | 16 | 16 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | — | SE 11 | SE 11 | SE 7 | SE 19 | S 8 | SE 18 | SE 18 | SE 17 | SW 7 | — | S 7 | SSE 15 | SE 9 | S 9 | SSE 14 | SE 10 | SSE 4 | SE 13 |
| kJ | 12 | — | 4 | 4 | 2 | 15 | 1 | 12 | 12 | 11 | 2 | — | 1 | 22 | 3 | 6 | 20 | 16 | 1 | 7 |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 4 | SSW 4 | S 4 | SSW 5 | — | — | — | — | — | SSE 3 | — | SSE 2 | — | SSE 4 | S 3 | S 3 | — | — | — |
| kJ | 10 | 11 | 12 | 6 | 19 | — | — | — | — | — | 1 | — | 1 | — | 2 | 8 | 4 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1403 | 77 | 77 | 1417 | 77 | 69 | 69 | 69 | 69 | 104 | 62 | 69 | 444 | 69 | 12 | 43 | 12 | 12 | 77 | 12 |
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)
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