
Surf Forecasts:
Sakawa River surf forecast from 21 Jul 2026:
- Best quality surf: Friday 24 Jul, 9PM (local time) - 1ft (0.3m), 16s period, SE swell with glassy winds.
- Most powerful swell: Monday 27 Jul, 3AM (local time) - 4.5ft (1.4m), 6s period, SSE swell with 114 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 9PM (local time) - 1ft (0.3m), 16s period with SE swell.
Best Forecast Surf Conditions for Sakawa River this week:
The surf forecast for Sakawa River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 24) at 9PM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.3m and 16s. Another secondary swell of 0.3m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sakawa River in the next 16 days are 1.4m 6s and forecast to arrive on Monday (Jul 27) 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 0.6m 4s period and expected on Monday (Jul 27) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Fri 24th Jul) | 1ft (0.3m) 16s |
| Best Surf | 9PM (Fri 24th Jul) | 1ft (0.3m) 16s |
| Most Powerful | 3AM (Mon 27th Jul) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s lining up for the Sakawa River.
To be honest, the first week or so is pretty grim. We’ve got a long stretch of nothing but tiny, poor surf from Wednesday the 22nd of July right through to the end of the month. The swell is barely a ripple, mostly around 0.7ft to 1ft, and the wind is consistently cross or cross-onshore, which just messes up what little is there. The energy is weak, barely tickling the 100 mark (combined energy in the 20-90 range). There’s a little window on Sunday the 26th of July morning where it goes glassy, but the swell is still only 1ft, so it’s just small, ordinary waves. Not worth getting wet for, really.
We do get a bit of a pulse around the 1st of August. Saturday morning August 1st has some clean, glassy conditions with a 2ft SE swell. The energy picks up to 147 (moderate), so it’s surfable but still very ordinary. Nothing to get excited about.
Now, the real news is the stand-out window that looks promising for Sunday the 2nd of August. The morning session is where it’s at. We’re looking at a 3ft ESE groundswell with a period of 15 seconds – that’s a long period, which means proper shape and energy. The wind is glassy, and the combined energy jumps to 614 (strong). It’s a river mouth, so that long period should wrap in nicely, offering some clean lines. This is your best bet of the whole run. It’s still a week and a half away, so keep an eye on it, but it looks tasty.
Monday the 3rd of August rolls in with a bigger swell, 7ft to 7ft from the south, with a very long period of 16 seconds. The energy is huge (2548), but it’s a bit of a mixed bag. The wind is onshore, which is a downer, and that size – over 7ft – is pushing into expert-only territory, especially at a river break. The tide conditions might also be a factor. It’s big and powerful, but not clean.
After that, Tuesday the 4th and Wednesday the 5th of August see the swell dropping back to 4ft to 6ft, but the wind turns nasty, with a strong offshore or cross-offshore flow (20-35 km/h). It’s clean in the morning on Wednesday, but the swell is dropping and the energy is fading. By Thursday the 6th of August, forget it – 55 km/h winds and heavy rain, just a write-off.
So, to sum it up: the first week is a blank. You’re waiting for that Sunday the 2nd of August morning. That’s the standout. The Sakawa River (Japan) should have some long-period, glassy, punchy waves. The water temperature is about average for the time of year, nothing unusual.
Stay patient, and that one day will be worth it.
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Tue night. Warm (max 32°C on Thu morning, min 27°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 22mm), heaviest during Sun night. Warm (max 27°C on Fri night, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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 11 | ESE 11 | ESE 11 | SW 4 | SE 10 | SE 10 | SE 18 | SE 18 | SE 17 | SE 16 | SE 16 | SE 16 | SE 15 | SE 15 | SE 11 | SE 5 | SE 6 | SE 10 | SE 10 |
Wave Graph | |||||||||||||||||||
11 | 11 | 11 | 11 | 16 | 16 | 49 | 49 | 45 | 41 | 40 | 39 | 35 | 42 | 40 | 50 | 60 | 36 | 36 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | cross-off | cross-on | cross-on | glassy | cross-on | cross-on | glassy | cross | cross | cross | glassy | glassy | cross | glassy | cross | cross |
High Tide | 9:12PM1.37m | 10:59AM1.02m | 9:42PM1.35m | 1:52PM1.02m | 10:23PM1.31m | 4:25PM1.11m | 11:26PM1.28m | 4:24PM1.19m | 00:48AM1.28m | 4:44PM1.26m | 1:59AM1.31m | 5:06PM1.31m | 2:54AM1.37m | ||||||
Low Tide | 4:27AM0.55m | 3:05PM0.90m | 5:40AM0.52m | 3:15PM1.02m | 6:57AM0.47m | 5:07PM1.11m | 8:03AM0.40m | 7:57PM1.13m | 8:56AM0.32m | 9:09PM1.09m | 9:39AM0.25m | 9:52PM1.04m | |||||||
— | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:47 | — | — | |
6:54 | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | |
mm | 1 | — | — | — | — | 1 | 2 | — | — | 4 | — | — | 4 | 3 | 3 | 5 | — | 3 | — |
Temp °C | 28 | 31 | 31 | 29 | 32 | 32 | 28 | 28 | 28 | 27 | 26 | 27 | 24 | 24 | 24 | 25 | 26 | 26 | 25 |
Feels °C | 33 | 35 | 36 | 34 | 36 | 37 | 34 | 32 | 32 | 33 | 28 | 29 | 26 | 28 | 28 | 29 | 31 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | ESE 11 | ESE 11 | SSW 6 | SSW 6 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 11 | SE 5 | SE 5 | SE 6 | SE 6 | SE 10 |
6 | 11 | 11 | 4 | 13 | 16 | 25 | 23 | 18 | 40 | 35 | 35 | 35 | 42 | 13 | 28 | 60 | 28 | 36 | |
Swell 2 Height (m) Direction Period (s) | ESE 11 | SSE 8 | SE 7 | SE 11 | SE 10 | E 10 | S 5 | S 7 | SE 17 | SE 16 | SE 16 | SE 16 | SE 15 | SE 5 | SE 11 | SE 10 | SSW 9 | SE 10 | ESE 6 |
11 | 6 | 2 | 5 | 16 | 8 | 4 | 9 | 45 | 41 | 40 | 39 | 35 | 6 | 40 | 39 | 26 | 36 | 13 | |
Swell 3 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | SE 11 | E 10 | SE 19 | SE 18 | SE 18 | SE 8 | ESE 3 | S 7 | ESE 4 | S 8 | SE 15 | SE 14 | SSW 9 | SE 10 | SSW 9 | SSW 8 |
7 | 8 | 2 | 4 | 8 | 14 | 49 | 49 | 2 | 1 | 1 | 2 | 5 | 34 | 33 | 27 | 37 | 25 | 24 | |
Wind waves Height (m) Direction Period (s) | SW 3 | SSW 4 | SSW 4 | SW 4 | — | SSW 6 | — | — | S 7 | — | ENE 3 | NE 3 | E 3 | — | SE 4 | SE 5 | NNW 2 | NNE 4 | NE 3 |
5 | 3 | 4 | 11 | — | 12 | — | — | 9 | — | 1 | 1 | 3 | — | 10 | 50 | 1 | 10 | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 68 | 68 | 1405 | 68 | 50 | 53 | 73 | 73 | 249 | 0 | 73 | 66 | 73 | 0 | 0 | 24 | 0 | 50 | 58 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Sakawa River Surf forecast
The above surf forecast table for Sakawa River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sakawa River can be found by selecting the local surf guide option on the grey menu. Our Sakawa 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 (Sakawa 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 Sakawa 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.
Sakawa River is 2 km (1 miles) from Odawara. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Odawara. Odawara has rooms for a wide range of budgets as well as car hire and transport links.










