Surf Forecasts:
Hanamizu River surf forecast from 8 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 3PM (local time) - 7ft (2.1m), 9s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 9 Sep, 3PM (local time) - 7ft (2.1m), 9s period, SSW swell with 734 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 3PM (local time) - 7ft (2.1m), 9s period with SSW 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 Wednesday (Sep 09) at 3PM. The primary swell is predicted to be 2.1m and 9s period with a secondary swell of 1.8m and 9s. Another secondary swell of 0.2m and 10s is also forecast. 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 2.1m 9s and forecast to arrive on Wednesday (Sep 09) at 3PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Sep 10) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Wed 9th Sep) | 7ft (2.1m) 9s |
| Best Surf | 3PM (Wed 9th Sep) | 7ft (2.1m) 9s |
| Most Powerful | 3PM (Wed 9th Sep) | 7ft (2.1m) 9s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s cooking.
Honestly, mate, it’s a bit of a flat spell coming up for the Hanamizu River area. We’ve got a 16-day window staring at us, but there’s really nothing to get excited about. The first few days show some swell, but it’s messy and the conditions are just not cooperating. The outlook is pretty lean.
The only real pulse of energy hits around the 8th and 9th of September, with a south swell pushing in. Wednesday the 9th morning sees the biggest swell at 6.6ft from the south, but the period is a short 8 seconds and the wind is a cross-shore 15 mph from the southwest, making it a choppy mess. The combined swell energy is moderate at best (591). Wednesday afternoon cleans up a bit with a cross-offshore wind, dropping to 5.9ft south swell, but it’s still a marginal call. Thursday the 10th morning drops to a clean 3.3ft from the south, but it’s light rain and the energy is weak (149). After that, swell just fades away.
The rest of the forecast is tiny, under 1.6ft for days, with mostly clean but completely unrideable conditions. There’s a bit of glassy water on the 15th and again on the 21st and 22nd, but with swell barely reaching 1.6ft, you’re just looking at a pond. The water is currently a touch warmer than normal at 81.9°F, but that’s about the only highlight.
Bottom line: there are no good surf options in this entire 16-day period. The Hanamizu River is a beach/sandbar setup, fairly exposed to the south, but the swell just doesn’t have the size or the right wind to make it happen. For a beginner-friendly spot that’s fairly consistent, this is a real bummer of a stretch. Occasionally this area can go quiet, but this is a proper dry spell.
Stay patient, mate. The forecasts can always flip.
Short Range ForecastHeavy rain (total 91mm), heaviest during Thu night. Warm (max 29°C on Wed morning, min 19°C on Thu morning). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Mon morning, min 20°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 10 | S 9 | SSW 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SSW 7 | SSW 7 | SSW 7 | SE 9 | SE 9 | SE 8 | SE 9 | SE 9 | SE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 159 | 537 | 734 | 225 | 116 | 86 | 46 | 44 | 43 | 29 | 18 | 10 | 5 | 13 | 12 | 17 | 29 | 28 | 25 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-off | cross-on | cross-on | glassy |
High Tide | 2:28AM1.38m | 4:25PM1.43m | 3:26AM1.47m | 4:45PM1.46m | 4:15AM1.53m | 5:05PM1.49m | 4:59AM1.54m | 5:24PM1.50m | 5:40AM1.52m | 5:42PM1.51m | 6:20AM1.46m | 6:01PM1.51m | |||||||
Low Tide | 9:20PM0.95m | 9:30AM0.17m | 9:53PM0.79m | 10:09AM0.18m | 10:26PM0.63m | 10:43AM0.24m | 10:57PM0.49m | 11:14AM0.34m | 11:29PM0.37m | 11:42AM0.46m | 00:01AM0.29m | 12:07PM0.58m | 00:34AM0.27m | ||||||
 |  |  |  |  |  | | |  |  | | |  | | | |  | | | |
 | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — |
 | 6:00 | — | 6:00 | — | — | 5:58 | — | — | 5:57 | — | — | 5:54 | — | — | 5:53 | — | — | 5:52 | — |
mm | 4 | — | 7 | 14 | 7 | 20 | 30 | 9 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 29 | 28 | 21 | 20 | 19 | 20 | 20 | 20 | 21 | 24 | 25 | 24 | 25 | 26 | 25 | 27 | 27 | 26 |
Feels °C | 30 | 30 | 33 | 18 | 19 | 18 | 19 | 21 | 21 | 22 | 25 | 26 | 25 | 25 | 27 | 29 | 28 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSE 8 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SSW 7 | SSW 7 | SSW 7 | SE 9 | SE 9 | SE 8 | SE 9 | SE 9 | SE 8 |
| kJ | 159 | 202 | 517 | 225 | 116 | 86 | 46 | 44 | 43 | 29 | 18 | 10 | 5 | 13 | 12 | 17 | 29 | 28 | 25 |
Swell 2 Height (m) Direction Period (s) | SE 12 | ESE 10 | ESE 10 | SE 9 | E 11 | ESE 10 | SE 9 | E 10 | SE 10 | SE 9 | SE 10 | SE 10 | SE 9 | SSW 7 | SSW 7 | S 7 | S 7 | E 12 | S 7 |
| kJ | 6 | 10 | 10 | 3 | 2 | 10 | 3 | 2 | 4 | 3 | 4 | 4 | 3 | 5 | 5 | 1 | 1 | 12 | 1 |
Swell 3 Height (m) Direction Period (s) | E 18 | SE 12 | E 16 | SE 11 | — | E 15 | E 16 | E 14 | S 8 | E 14 | S 8 | E 14 | E 13 | E 13 | — | — | SW 7 | E 15 | S 7 |
| kJ | 6 | 6 | 5 | 5 | — | 17 | 5 | 4 | 1 | 4 | 1 | 4 | 3 | 3 | — | — | 2 | 4 | 1 |
Wind waves Height (m) Direction Period (s) | S 6 | S 9 | SSW 9 | NE 4 | NNE 3 | N 3 | NNE 3 | NNE 3 | NNE 3 | NNE 2 | NNE 2 | — | — | NNE 2 | — | — | — | S 3 | SSW 3 |
| kJ | 128 | 537 | 734 | 14 | 8 | 6 | 4 | 2 | 3 | 1 | 1 | — | — | 1 | — | — | — | 8 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 77 | 465 | 493 | 527 | 112 | 123 | 12 | 12 | 10 | 59 | 12 | 69 | 69 | 69 | 69 | 41 | 41 | 43 | 76 |
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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