Surf Forecasts:
Sakawa River surf forecast from 27 Aug 2026:
- Best quality surf: Friday 4 Sep, 3AM (local time) - 5ft (1.5m), 10s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 3 Sep, 6AM (local time) - 4.5ft (1.3m), 12s period, S swell with 464 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 3AM (local time) - 2.5ft (0.7m), 9s period with SSW 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 (Aug 28) at 3AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.9m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sakawa River in the next 16 days are 1.3m 12s and forecast to arrive on Thursday (Sep 03) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 5s period and expected on Sunday (Aug 30) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Fri 28th Aug) | 2.5ft (0.7m) 9s |
| Best Surf | 3AM (Fri 4th Sep) | 5ft (1.5m) 10s |
| Most Powerful | 6AM (Thu 3rd Sep) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s take a look at what the Sakawa River has in store for us over the next couple of weeks.
First off, it’s pretty bleak out there for a while. The wave energy is weak at just 205, with a tiny 3ft south swell on Friday the 28th. The wind is a weird cross-off, so it might look okay, but the size is too small to get excited about. Friday afternoon gets glassy with the same knee-high dribble, dropping to 2ft with a period of 8 seconds, and energy down to 144. It’s surfable, but you’d be working hard for nothing.
Then comes a grim stretch. From Saturday the 29th right through the end of the first week of September, we’re looking at multiple days with scores of zero. The swell stays tiny, often under 2ft, and when it does push up a little, the wind is cross or cross-on and choppy. A lot of those days have combined energy under 100 or just barely there, like 38 or 42. It’s pretty much flat or blown out. The water temp is about average for this time of year, nothing weird to report.
Now, there is a glimmer. On Tuesday the 8th of September, things finally turn. That afternoon sees a 4ft south swell with a period of 10 seconds and the wind goes cross-off from the WSW, giving us clean conditions. The combined energy hits a moderate 278, and the forecast suggests good surf. It’s not huge, but it’s clean and the Sakawa River handles a south swell well when it’s offshore. That Tuesday afternoon is the standout. It’s an intermediate spot, fairly consistent, and the wind should keep the surface glassy.
After that, we get a bit of a spike on Thursday the 10th of September with a 6ft south-southeast swell, but the wind is cross and the period is 10 seconds, leading to messy conditions. Too much chop for it to be fun. And the 6ft is getting a bit punchy for the river mouth.
Overall, the surf honestly looks pretty poor for the next week and a half. For kite surfers, the setup might be more interesting on those windy, choppy days, but for a paddle surfer, you’re waiting until Tuesday the 8th of September for the one half-decent window. After that, it fades again.
That’s the long and short of it.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Thu night. Warm (max 28°C on Fri afternoon, min 22°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Wed morning, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||
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) | S 10 | S 9 | SSW 8 | S 8 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SSW 11 | S 10 | S 10 | SSW 11 | SSW 10 | SSW 10 | S 10 | S 10 | S 10 |
Wave Graph | |||||||||||||||||||
88 | 99 | 70 | 44 | 30 | 31 | 29 | 25 | 27 | 26 | 40 | 74 | 80 | 191 | 170 | 157 | 198 | 230 | 284 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | glassy | cross-off | cross | cross-on | cross-off | cross-off | glassy | glassy | cross | cross-on | cross-off | on | cross-on | glassy | cross-on | cross | cross |
High Tide | 4:16AM1.47m | 5:27PM1.46m | 4:55AM1.50m | 5:45PM1.49m | 5:33AM1.50m | 6:05PM1.51m | 6:13AM1.47m | 6:25PM1.51m | 6:56AM1.41m | 6:47PM1.51m | 7:44AM1.31m | 7:09PM1.49m | |||||||
Low Tide | 10:39PM0.74m | 10:54AM0.20m | 11:08PM0.63m | 11:22AM0.24m | 11:38PM0.52m | 11:50AM0.32m | 00:10AM0.43m | 12:17PM0.43m | 00:44AM0.36m | 12:44PM0.57m | 1:22AM0.32m | 1:11PM0.72m | 2:06AM0.32m | ||||||
— | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | |
6:17 | — | 6:16 | — | — | 6:15 | — | — | 6:14 | — | — | 6:13 | — | — | 6:10 | — | — | 6:09 | — | |
mm | 3 | — | — | — | — | 2 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 28 | 27 | 26 | 24 | 23 | 23 | 24 | 25 | 29 | 29 | 26 | 29 | 29 | 26 | 30 | 30 | 26 |
Feels °C | 30 | 30 | 32 | 30 | 28 | 27 | 25 | 26 | 28 | 29 | 31 | 31 | 29 | 32 | 32 | 31 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 9 | SSW 8 | S 8 | SSW 8 | SSW 8 | SE 11 | SE 10 | SE 10 | SE 10 | SSW 11 | S 10 | S 10 | SSW 11 | SSW 10 | SSW 10 | S 10 | S 10 | S 10 |
88 | 99 | 70 | 44 | 19 | 19 | 29 | 25 | 27 | 26 | 40 | 74 | 80 | 191 | 170 | 157 | 198 | 230 | 284 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 9 | SSE 9 | SSE 10 | SE 11 | SE 11 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SE 10 | SE 9 | S 9 | E 11 | E 11 | E 11 | ESE 10 | ESE 10 | ESE 10 |
24 | 23 | 17 | 18 | 30 | 31 | 12 | 11 | 11 | 11 | 24 | 14 | 40 | 66 | 64 | 61 | 35 | 37 | 19 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | E 12 | ESE 9 | SE 13 | ESE 8 | ESE 9 | ESE 3 | ESE 4 | ESE 6 | S 13 | SSW 7 | ESE 13 | ESE 12 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 |
18 | 11 | 8 | 7 | 7 | 9 | 2 | 2 | 4 | 3 | 5 | 34 | 29 | 16 | 15 | 15 | 17 | 16 | 14 | |
Wind waves Height (m) Direction Period (s) | SSW 6 | SSW 6 | SSW 6 | — | NE 3 | ENE 3 | — | — | — | SW 2 | SSW 3 | S 3 | SSW 3 | — | — | — | — | — | — |
29 | 72 | 49 | — | 3 | 1 | — | — | — | 1 | 1 | 5 | 2 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 68 | 0 | 0 | 9 | 73 | 249 | 82 | 82 | 50 | 90 | 53 | 68 | 0 | 58 | 58 | 0 | 68 | 68 | 67 |
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.











