
Surf Forecasts:
Sakawa River surf forecast from 9 Aug 2026:
- Best quality surf: Monday 10 Aug, 3PM (local time) - 2.5ft (0.8m), 12s period, ESE swell with glassy winds.
- Most powerful swell: Monday 10 Aug, 9AM (local time) - 3ft (0.9m), 12s period, ESE swell with 244 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 3PM (local time) - 2.5ft (0.8m), 12s period with ESE 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 Monday (Aug 10) at 3PM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.6m and 11s. 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 0.9m 12s and forecast to arrive on Monday (Aug 10) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Aug 17) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 10th Aug) | 2.5ft (0.8m) 12s |
| Best Surf | 3PM (Mon 10th Aug) | 2.5ft (0.8m) 12s |
| Most Powerful | 9AM (Mon 10th Aug) | 3ft (0.9m) 12s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what we’ve got coming up.
Look, straight up, this forecast for the Sakawa River is pretty quiet for the most part. We’ve got a long stretch ahead with hardly anything to get excited about. There’s a real gap from the start, with nothing worth paddling out for through the first several days. The best chance we see is tucked away later in the forecast, but it’s a long way off.
Monday, August 10th kicks things off, but it’s not much to write home about. We’ve got a small ESE swell around 3ft with a 12-second period, which is a nice long-period groundswell, but the wave energy is only moderate at 353. The wind is light and cross-shore in the morning, and by the afternoon it goes glassy. The water temp is 81°, which is about average for this time of year. It’s surfable, but it’s marginal. Not the day to call in sick for.
Tuesday, August 11th sees the swell drop to 2ft. The morning is glassy with an easterly swell at 11 seconds, and the wave energy is moderate at 148. The afternoon picks up a bit more energy at 203, but it’s still just ordinary conditions. You could get wet, but it’s nothing special.
From Wednesday, August 12th right through to Sunday, August 24th, it’s a real slog. The swell hovers between 1ft and 2ft, with periods mostly short to average. The wave energy stays weak, often under 100, and many days are marked as poor surf conditions. Wind is often cross-off or onshore, and there’s a lot of risk of thunderstorms. There are a few glassy moments here and there, but the swell just isn’t there. This is a proper flat spell.
Now, if you’ve got patience, Monday, August 25th offers a tiny glimmer. The morning is glassy again, with a 1ft SE swell but a very long 13-second period. The energy is still weak at 97, so don’t expect much.
But the real standout, the only one worth marking on the calendar, is Tuesday afternoon, August 25th. The swell bumps up to 4ft from the SE, with a 12-second period. The combined energy jumps to a moderate 371, which is the highest we see in this whole outlook. The wind is light and cross-on from the south, but it’s light enough to keep things clean. For the Sakawa River, this is as good as it gets in this 16-day window. It’s still not huge, but for an intermediate, it’s the pick of a very lean bunch. Keep an eye on it, but remember it’s a long way off and things can change.
That’s the story. Not much going on, but there’s a little window right at the end if you’re keen.
Rusty.
Short Range ForecastHeavy rain (total 31mm), heaviest during Tue night. Warm (max 28°C on Mon morning, min 23°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 27mm), heaviest during Sat night. Warm (max 30°C on Fri morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | ESE 12 | ESE 12 | E 11 | E 11 | E 12 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | E 11 | E 11 | E 11 | E 10 | E 10 | S 11 | S 12 | SE 12 | SE 11 | SE 11 |
Wave Graph | |||||||||||||||||||||
244 | 189 | 149 | 86 | 98 | 80 | 58 | 59 | 56 | 38 | 52 | 59 | 85 | 86 | 54 | 52 | 57 | 98 | 66 | 60 | 58 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross | glassy | cross-off | cross-on | glassy | off | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy |
High Tide | 4:36PM1.39m | 2:12AM1.41m | 5:04PM1.45m | 3:16AM1.49m | 5:30PM1.47m | 4:10AM1.55m | 5:55PM1.48m | 4:59AM1.57m | 6:17PM1.48m | 5:45AM1.54m | 6:38PM1.48m | 6:30AM1.47m | 6:58PM1.47m | ||||||||
Low Tide | 9:22PM1.10m | 9:44AM0.04m | 10:06PM0.99m | 10:28AM0.00m | 10:44PM0.87m | 11:08AM0.03m | 11:20PM0.74m | 11:43AM0.11m | 11:56PM0.62m | 12:15PM0.24m | 00:33AM0.52m | 12:43PM0.39m | 1:10AM0.46m | ||||||||
4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | |
— | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | |
mm | — | 2 | 1 | — | 3 | 23 | 2 | — | — | 1 | 3 | 1 | 1 | 3 | 4 | 3 | 3 | 8 | — | — | 8 |
Temp °C | 28 | 28 | 25 | 26 | 25 | 23 | 24 | 24 | 24 | 28 | 28 | 25 | 30 | 29 | 26 | 27 | 26 | 24 | 27 | 26 | 24 |
Feels °C | 30 | 32 | 26 | 27 | 27 | 26 | 27 | 25 | 24 | 29 | 29 | 27 | 33 | 33 | 29 | 27 | 27 | 24 | 25 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | ESE 12 | ESE 12 | E 11 | E 11 | E 12 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | E 11 | E 11 | E 11 | E 10 | E 10 | S 11 | S 12 | SSW 10 | S 10 | E 10 |
244 | 189 | 149 | 86 | 98 | 80 | 58 | 59 | 56 | 38 | 52 | 59 | 85 | 86 | 54 | 52 | 57 | 98 | 62 | 48 | 47 | |
Swell 2 Height (m) Direction Period (s) | S 11 | SSW 11 | SSW 10 | SSW 10 | SSW 11 | E 11 | SE 4 | SE 4 | ESE 9 | ESE 10 | ESE 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SE 10 | E 10 | ESE 10 | SE 12 | E 10 | SE 11 |
88 | 91 | 80 | 60 | 88 | 41 | 8 | 6 | 16 | 31 | 29 | 28 | 28 | 28 | 28 | 16 | 54 | 31 | 66 | 50 | 58 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SE 11 | SW 11 | E 4 | SSE 13 | SSE 13 | E 10 | E 10 | S 5 | S 5 | SSE 12 | SSE 12 | SE 11 | SE 11 | SE 10 | SSW 9 | SE 9 | SE 8 | ESE 10 | SE 11 | SSW 9 |
21 | 5 | 5 | 2 | 17 | 16 | 18 | 16 | 5 | 2 | 13 | 14 | 20 | 19 | 25 | 16 | 22 | 18 | 31 | 60 | 28 | |
Wind waves Height (m) Direction Period (s) | — | — | NE 3 | NNE 3 | SW 3 | SW 3 | SE 4 | ESE 4 | — | NNE 2 | — | — | NE 3 | NE 3 | NNE 4 | NE 4 | NE 4 | NNE 3 | — | NE 3 | NNE 3 |
— | — | 2 | 2 | 2 | 2 | 17 | 6 | — | 1 | — | — | 6 | 3 | 8 | 16 | 8 | 5 | — | 2 | 5 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 0 | 30 | 0 | 0 | 450 | 0 | 0 | 9 | 89 | 38 | 0 | 0 | 58 | 0 | 111 | 454 | 111 | 100 | 0 | 0 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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.











