
Surf Forecasts:
Sakawa River surf forecast from 11 Aug 2026:
- Best quality surf: Sunday 16 Aug, 6PM (local time) - 6ft (1.9m), 10s period, E swell with glassy winds.
- Most powerful swell: Sunday 16 Aug, 6PM (local time) - 6ft (1.9m), 10s period, E swell with 730 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 6AM (local time) - 2.5ft (0.8m), 10s 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 Wednesday (Aug 12) at 6AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.3m and 10s. 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 1.9m 10s and forecast to arrive on Sunday (Aug 16) at 6PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Sunday (Aug 16) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 12th Aug) | 2.5ft (0.8m) 10s |
| Best Surf | 6PM (Sun 16th Aug) | 6ft (1.9m) 10s |
| Most Powerful | 6PM (Sun 16th Aug) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
G’day, Rusty here, and I gotta be straight with ya—the Sakawa River is lookin’ at a pretty flat and ordinary run over the next couple of weeks. There’s a spot of promise right at the tail end, but you’ll be waitin’ a while for it.
We start off on Wednesday, 12th August with a tiny 2ft south swell, period around 10 seconds, and a light NNE cross-off breeze. The combined energy is weak (147), so you’re gettin’ surfable but very ordinary little waves. The morning’s your best bet—clean enough—but the afternoon turns to junk with a risk of thunderstorms and a cross wind. After that, we drop into a real dry spell. From Thursday the 13th right through to Monday the 24th of August, it’s a long stretch of poor conditions. The swell hangs around 1ft to 2ft, mostly from the south or southeast, with periods mostly short (8 to 10 seconds). The winds are consistently cross, cross-on, or onshore, and the combined energy barely climbs above 100 for most of that time—feeble stuff. There’s a brief flicker on Saturday the 15th afternoon with a 4ft east swell and 500 units of energy, but it’s still a marginal call with questionable tide conditions and a cross wind. Not worth paddlin’ out for.
Then on Tuesday the 26th August, the afternoon shows a 3ft south-southeast swell with 252 in combined energy, but it’s onshore wind and poor—definitely not your day.
Now, the standout—and I mean the *only* standout—comes on Thursday, 27th August morning. The river’s finally got a bit of life: 4ft swell from the south, period 11 seconds, with a light north cross-off breeze. The combined energy hits 353 (moderate), and the data says “expect good surf conditions.” This is clean, with the wind off the land, and that longer period means the waves will have some shape and push. Remember, though, Sakawa River is a river mouth, and with a south swell comin’ in, it’ll line up best on the banks. It’s a fairly consistent spot, so this swell should find its way in. The water temp’s about average for this time of year, nothin’ wild. You’ll have to share the waves—crowds are possible at times. If you’re an intermediate surfer, this is the one to pencil in. Everything else? Save your energy.
Rusty.
Short Range ForecastHeavy rain (total 47mm), heaviest during Tue night. Warm (max 29°C on Thu morning, min 23°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Sat afternoon. Warm (max 28°C on Sat morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 10 | SSW 10 | SSW 10 | SSW 10 | S 9 | E 10 | E 10 | E 10 | ESE 10 | S 11 | E 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 |
Wave Graph | |||||||||||||||||||
58 | 100 | 59 | 38 | 38 | 45 | 65 | 50 | 56 | 75 | 61 | 332 | 135 | 135 | 231 | 218 | 128 | 61 | 26 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off | cross | cross | cross-off | cross-off | on | cross | on | cross-on | cross |
High Tide | 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 | 7:14AM1.36m | 7:18PM1.46m | |||||||
Low Tide | 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 | 1:08PM0.55m | 1:49AM0.43m | ||||||
— | 4:58 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — | |
6:37 | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | |
mm | 30 | 3 | 4 | 1 | — | 2 | 2 | 1 | 4 | 4 | 2 | 5 | 1 | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 24 | 29 | 29 | 26 | 29 | 29 | 26 | 28 | 27 | 26 | 28 | 28 | 25 | 25 | 26 | 25 |
Feels °C | 27 | 27 | 28 | 26 | 31 | 32 | 29 | 31 | 32 | 29 | 30 | 30 | 28 | 29 | 29 | 27 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | S 10 | SSW 10 | ESE 5 | SSW 10 | S 9 | E 10 | E 10 | E 10 | ESE 10 | S 11 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 |
58 | 100 | 59 | 15 | 38 | 45 | 65 | 50 | 56 | 75 | 61 | 111 | 135 | 135 | 231 | 218 | 128 | 61 | 26 | |
Swell 2 Height (m) Direction Period (s) | E 11 | E 10 | E 9 | S 6 | ESE 9 | ESE 9 | SSW 9 | SSW 9 | SSW 9 | S 12 | E 10 | S 10 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 10 | SSW 9 | SSW 9 |
38 | 17 | 16 | 16 | 29 | 29 | 28 | 28 | 27 | 73 | 46 | 51 | 43 | 28 | 29 | 28 | 30 | 27 | 15 | |
Swell 3 Height (m) Direction Period (s) | SSE 13 | SE 13 | SSE 12 | SSW 10 | S 6 | E 12 | S 12 | SSE 11 | SSE 11 | SSE 8 | SE 8 | SSE 8 | SSE 10 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 |
16 | 26 | 15 | 38 | 6 | 11 | 11 | 12 | 12 | 28 | 31 | 6 | 9 | 21 | 20 | 19 | 19 | 19 | 18 | |
Wind waves Height (m) Direction Period (s) | SSW 5 | ESE 3 | ESE 6 | — | NE 3 | ENE 3 | — | NE 3 | ENE 3 | — | NE 3 | E 10 | NE 3 | NE 3 | NE 3 | — | — | — | — |
24 | 4 | 28 | — | 5 | 1 | — | 3 | 2 | — | 2 | 332 | 1 | 6 | 2 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 108 | 0 | 30 | 31 | 66 | 31 | 0 | 38 | 58 | 0 | 30 | 22 | 0 | 0 | 27 | 27 | 58 | 58 | 68 |
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.











