Surf Forecasts:
Hanamizu River surf forecast from 22 Aug 2026:
- Best quality surf: Monday 24 Aug, 9PM (local time) - 4.5ft (1.4m), 15s period, SSE swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 12PM (local time) - 5.5ft (1.7m), 14s period, S swell with 1,047 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 12AM (local time) - 1.5ft (0.5m), 13s 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 Monday (Aug 24) at 12AM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.3m 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 1.7m 14s and forecast to arrive on Tuesday (Aug 25) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 9s period and expected on Tuesday (Aug 25) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 24th Aug) | 1.5ft (0.5m) 13s |
| Best Surf | 9PM (Mon 24th Aug) | 4.5ft (1.4m) 15s |
| Most Powerful | 12PM (Tue 25th Aug) | 5.5ft (1.7m) 14s |
Table - best surf conditions forecast for Hanamizu River over the next 16 days.
The Lowdown
Alright, Rusty here with the long-range look at Hanamizu River. I've been staring at the charts and it's a bit of a mixed bag, to be honest. Hold on to your board, 'cause the first week is gonna test your patience. There's a stretch from Sunday the 23rd all the way through to the next weekend where it’s looking pretty grim. Lots of days with no real recommendations, just waiting it out.
The first real flicker of hope comes on Monday the 25th. Tuesday morning the swell starts to show a little life. We're looking at clean conditions Tuesday morning with a 5ft south swell, and the wave energy is building to a proper moderate level (1208). The wind is light cross-onshore which isn't ideal but it's not wrecking it. It's a beach and sandbar setup, so don't expect perfection, but it’s surfable. The water temp feels pretty normal for this time of year.
The standout window is shaping up to be Friday the 28th and the following couple of days. On Friday afternoon, the wind goes glassy, dead calm, with a 3ft south swell. The energy is low, but the conditions will be perfect. That's the one to get out of work for. Saturday the 29th morning is also looking glassy and clean, with a 2ft south swell. That's gonna be your best bet for a proper session – clean, quiet, and easy. For the best quality, head out on Friday afternoon (28th) or Saturday morning (29th). These are small waves, good for a beginner or for getting a longboard out. If you're looking for something bigger, the bigger days around 5ft are more for intermediate to advanced surfers; a 5ft wave can be a handful for a newbie.
After that, the second week has a few little windows. Monday the 1st September has clean morning conditions with a tiny 2ft south swell, then Thursday the 4th and Friday the 5th of September have some stronger cross-offshore winds with waist-high swell, but the confidence is lower that far out. Keep an eye on it.
All in all, it's not an epic run, but there are some glassy, clean windows to scratch the itch. Don't give up on it.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sat night. Warm (max 29°C on Tue morning, min 25°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Fri afternoon. Warm (max 30°C on Wed afternoon, min 24°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 9 | SSW 9 | SE 13 | SE 13 | SSE 15 | SSE 17 | SSE 14 | S 14 | S 14 | S 14 | S 13 | SSW 13 | SSW 12 | S 10 | S 8 | S 9 | S 8 | S 9 | SSW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 31 | 25 | 27 | 82 | 252 | 516 | 994 | 849 | 932 | 946 | 663 | 361 | 199 | 218 | 135 | 93 | 63 | 102 | 187 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross-on | glassy | on | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross-on | glassy | cross-off | glassy | cross |
High Tide | 9:51PM1.23m | 4:23PM1.21m | 00:27AM1.21m | 4:23PM1.27m | 1:56AM1.27m | 4:35PM1.33m | 2:52AM1.35m | 4:51PM1.38m | 3:36AM1.42m | 5:08PM1.43m | 4:16AM1.47m | 5:27PM1.46m | |||||||
Low Tide | 7:42AM0.47m | 8:28PM1.14m | 8:39AM0.38m | 9:13PM1.05m | 9:21AM0.30m | 9:43PM0.96m | 9:55AM0.23m | 10:11PM0.85m | 10:25AM0.20m | 10:39PM0.74m | 10:54AM0.20m | 11:08PM0.63m | |||||||
 |  |  |  |  | | | | | | | | | | | | |  |  | |
 | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — |
 | 6:23 | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | — | 6:17 | — | — | 6:15 | — |
mm | 5 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 5 | 7 |
Temp °C | 27 | 27 | 28 | 26 | 28 | 28 | 26 | 29 | 29 | 27 | 29 | 30 | 27 | 30 | 30 | 27 | 27 | 26 | 24 |
Feels °C | 31 | 29 | 31 | 30 | 31 | 30 | 29 | 33 | 31 | 29 | 30 | 31 | 29 | 32 | 32 | 31 | 30 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSW 9 | SSW 8 | SE 13 | SSE 15 | SSE 17 | SSE 14 | S 14 | S 14 | S 14 | S 13 | SSW 13 | SSW 12 | S 10 | SSW 10 | S 9 | S 8 | S 9 | SSW 11 |
| kJ | 31 | 25 | 14 | 82 | 252 | 516 | 994 | 849 | 932 | 946 | 663 | 361 | 199 | 218 | 41 | 93 | 63 | 102 | 187 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 13 | SSW 8 | SSE 12 | SSE 13 | ESE 15 | S 17 | E 13 | ESE 13 | SSE 10 | SSE 9 | SSE 9 | — | SSE 10 | SW 10 | SSW 9 | SSW 11 | SSE 10 |
| kJ | 4 | 4 | 27 | 14 | 133 | 219 | 42 | 355 | 3 | 33 | 140 | 113 | 32 | — | 10 | 14 | 34 | 12 | 9 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 13 | SE 10 | SSE 18 | SSW 8 | SW 9 | E 11 | E 14 | SW 10 | WSW 10 | ESE 12 | ESE 12 | E 16 | E 11 | E 10 | SE 14 | SE 14 | SE 15 | E 12 |
| kJ | 5 | 7 | 4 | 31 | 14 | 3 | 10 | 4 | 14 | 9 | 29 | 28 | 5 | 21 | 2 | 8 | 8 | 8 | 11 |
Wind waves Height (m) Direction Period (s) | S 4 | — | SSE 4 | — | — | SSW 8 | SSW 4 | SW 9 | S 4 | SSW 4 | — | S 9 | SSW 4 | — | S 8 | — | NNE 3 | — | — |
| kJ | 6 | — | 2 | — | — | 21 | 7 | 21 | 14 | 13 | — | 198 | 31 | — | 135 | — | 2 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 77 | 69 | 62 | 0 | 12 | 77 | 0 | 76 | 465 | 0 | 13 | 104 | 0 | 13 | 104 | 0 | 19 | 0 | 59 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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