Surf Forecasts:
Hanamizu River surf forecast from 5 Jul 2026:
- Best quality surf: Thursday 9 Jul, 3AM (local time) - 5.5ft (1.7m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Saturday 11 Jul, 3AM (local time) - 7.5ft (2.3m), 18s period, SSW swell with 3,237 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 3AM (local time) - 5.5ft (1.7m), 16s period with SSE 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 09) at 3AM. The primary swell is predicted to be 1.7m and 16s period with a secondary swell of 0.6m and 8s. 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 2.3m 18s and forecast to arrive on Saturday (Jul 11) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Jul 07) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 9th Jul) | 5.5ft (1.7m) 16s |
| Best Surf | 3AM (Thu 9th Jul) | 5.5ft (1.7m) 16s |
| Most Powerful | 3AM (Sat 11th Jul) | 7.5ft (2.3m) 18s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here again for the imperial crew.
So, the Hanamizu River forecast for the next sixteen days starts off with not much to shout about. The first few days are a complete write-off.
From Sunday the 5th of July, you’re looking at rain and onshore winds, with a tiny 2ft SE swell and combined energy down at just 34 – that’s flat to most. That rubbish carries through Monday the 6th with more rain and cross-shore winds.
Things start to look up on the morning of Tuesday the 8th of July. A clean 6ft SSE groundswell with a very long period of 17 seconds rolls in, and the energy jumps to 1843. That’s strong. The wind is a light cross-off from the NNE, so it should keep the surface tidy. The long period means the waves will be better for reef and point setups, but here at the beach/sandbar it might be a bit too lined up. It’ll be a session for the experienced crew.
The real standout comes on the morning of Saturday the 11th of July. Swell hits 7ft from the SSW with a 17-second period and a massive 2876 combined energy – that’s strong. Wind is a light cross-onshore, so there will be a bit of texture, but still very surfable. At 7ft, this is expert territory. Beginners stay on shore.
If you want the cleanest, friendliest session, head out on the morning of Sunday the 12th of July. The swell drops to a manageable 5ft from the SSW with a 16-second period, but the wind goes glassy from the SW. Combined energy is still decent at 966. That should be the best balance of power and clean faces all run.
After that, it fades hard. From lunchtime Sunday the 12th through to the end of the forecast on the 20th of July, the swell drops below 3ft and the energy falls off a cliff. From the 13th on, it’s all poor conditions and weak, short-period wind slop.
Water temp on the 5th is 74°, which is just 1° cooler than average for this time of year – pretty normal.
So the call is: the morning of Saturday the 11th of July for the heaviest, biggest set waves, or the glassy morning of Sunday the 12th of July for the cleanest, most enjoyable waves for the experienced surfer. The river mouth can be fickle, but it will be worth it for those two windows.
Rusty
Short Range ForecastHeavy rain (total 63mm), heaviest during Mon afternoon. Warm (max 25°C on Tue afternoon, min 20°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Wed afternoon, min 21°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | |||||||||||||||
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) | SE 5 | SSE 6 | SSE 7 | SE 7 | SE 14 | SSE 14 | SSE 15 | SSE 14 | SE 16 | SSE 17 | SSE 16 | SSE 16 | S 15 | S 16 | S 16 | S 17 | SSW 16 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 25 | 47 | 77 | 151 | 70 | 138 | 201 | 437 | 702 | 1714 | 1631 | 1324 | 991 | 1551 | 1750 | 2318 | 2458 | 3201 | 2876 | 1896 | 1474 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross | cross | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | on | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross | cross-off |
High Tide | 8:38PM1.40m | 7:54AM1.24m | 9:08PM1.40m | 8:58AM1.15m | 9:41PM1.39m | 10:25AM1.08m | 10:19PM1.38m | 12:24PM1.08m | 11:05PM1.37m | 2:23PM1.17m | 00:00AM1.38m | 3:42PM1.29m | 1:03AM1.41m | ||||||||
Low Tide | 1:46PM0.33m | 2:30AM0.77m | 2:20PM0.45m | 3:25AM0.70m | 2:58PM0.60m | 4:28AM0.62m | 3:45PM0.76m | 5:38AM0.51m | 4:48PM0.92m | 6:49AM0.38m | 6:20PM1.05m | 7:55AM0.23m | 7:58PM1.11m | ||||||||
 |  |  |  | |  |  | |  | | |  |  | | | | | | | | | |
 | 4:33 | — | — | 4:33 | — | — | 4:33 | — | — | 4:33 | — | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — | — |
 | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — |
mm | 2 | — | 4 | 14 | 30 | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 23 | 21 | 21 | 20 | 23 | 25 | 23 | 24 | 25 | 23 | 24 | 25 | 23 | 25 | 25 | 24 | 26 | 27 | 25 |
Feels °C | 27 | 26 | 26 | 23 | 21 | 18 | 22 | 24 | 24 | 25 | 26 | 24 | 25 | 25 | 25 | 26 | 25 | 26 | 27 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 4 | SSE 6 | SSE 7 | SE 7 | SE 7 | SSE 14 | SSE 15 | SSE 14 | SE 16 | SSE 17 | SSE 16 | SSE 16 | S 15 | S 16 | S 16 | S 17 | SSW 16 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
| kJ | 4 | 47 | 77 | 49 | 47 | 138 | 201 | 437 | 702 | 1714 | 1631 | 1324 | 991 | 1551 | 1750 | 2318 | 2458 | 3201 | 2876 | 1896 | 1474 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 15 | SE 15 | SE 14 | SE 7 | SE 12 | ESE 8 | SSE 19 | E 9 | ESE 9 | S 20 | S 19 | ESE 8 | ESE 9 | ESE 8 | — | — | — | — | — |
| kJ | 4 | 4 | 9 | 54 | 70 | 29 | 67 | 64 | 375 | 129 | 103 | 125 | 358 | 33 | 44 | 20 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 6 | SE 16 | SSW 7 | SW 6 | SSE 16 | S 7 | SE 7 | SE 11 | SSE 19 | — | ESE 9 | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 10 | 4 | 2 | 27 | 1 | 13 | 112 | 630 | — | 80 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 5 | — | — | SE 7 | — | NNE 4 | NNE 4 | NNE 3 | — | — | — | — | — | — | — | — | — | — | — | S 4 | SSW 4 |
| kJ | 25 | — | — | 151 | — | 14 | 7 | 7 | — | — | — | — | — | — | — | — | — | — | — | 12 | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 203 | 36 | 27 | 19 | 123 | 19 | 123 | 19 | 10 | 19 | 12 | 12 | 19 | 43 | 0 | 43 | 62 | 0 | 76 | 104 | 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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