Surf Forecasts:
Sakawa River surf forecast from 27 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 3AM (local time) - 3.5ft (1.0m), 12s period, S swell with glassy winds.
- Most powerful swell: Wednesday 2 Sep, 3AM (local time) - 3.5ft (1.0m), 12s period, S swell with 271 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 3PM (local time) - 1.5ft (0.5m), 10s period with S 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 Thursday (Aug 27) at 3PM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.8m and 6s 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 1.0m 12s and forecast to arrive on Wednesday (Sep 02) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 29) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Thu 27th Aug) | 1.5ft (0.5m) 10s |
| Best Surf | 3AM (Wed 2nd Sep) | 3.5ft (1.0m) 12s |
| Most Powerful | 3AM (Wed 2nd Sep) | 3.5ft (1.0m) 12s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's take a look at what's cooking for the Sakawa River stretch.
Right off the bat, we're in a bit of a flat spell. The water's sitting at a warm 82°, which is pretty standard for this time of year. The first week is looking grim, with nothing but tiny, weak waves on the menu. The combined energy is barely registering, with values like 169, 139, and even down to 36 for a few days. We're talking about a long, quiet stretch from Thursday the 27th all the way through to the end of the first week.
The real story starts to kick in around the end of the first week. There's a pulse of energy that arrives on Friday the 4th of September. The morning brings a solid 7ft swell from the SSE, with a period of 11 seconds, and the combined energy jumps to 1079. That's a serious amount of power. The wind is light, but it's a cross-on, so the morning session might be a bit lumpy. The real standout window is the afternoon of that same day, Friday the 4th. The swell drops to a still-juicy 5ft from the SE, with a light NNE breeze that's cross-offshore. That's going to clean things up nicely, and the forecast is calling it "very good surf conditions." That's the pick of the early run.
Then it gets even more interesting. The following Monday, September 7th, the morning session is looking like the absolute standout. We've got a 6ft swell from the S, with a moderate 1077 combined energy, and a light cross-offshore wind from the NNE. The forecast is calling for "very good surf conditions" again. This is the one to circle on the calendar.
Tuesday the 8th brings more size, with the swell pushing up to 7ft in the morning and 8ft in the afternoon. That's getting into expert-only territory, especially at a river mouth. The wind stays light, but it's cross-on, so expect some bump. The energy is massive, peaking at 1742, but the quality will be a question mark for the average punter.
For the rest of the second week, the wind turns crap again, with strong cross-shore breezes and the swell drops right back off. It's a classic case of picking your window.
The one to go for: Monday morning, September 7th at Sakawa River. You'll get that clean 6ft south swell with a light offshore touch. It's not going to be perfect, but it's the best of the lot.
Stay stoked.
Rusty
Short Range ForecastModerate rain (total 18mm), heaviest on Thu afternoon. Warm (max 29°C on Thu morning, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Sun night. Warm (max 28°C on Mon morning, min 24°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | S 11 | S 10 | S 10 | S 9 | S 8 | S 8 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | S 11 | S 10 | S 11 | S 10 | S 10 | S 10 | S 11 | S 10 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 58 | 54 | 88 | 74 | 49 | 33 | 30 | 31 | 29 | 25 | 27 | 17 | 63 | 133 | 188 | 167 | 161 | 179 | 231 | 244 | 259 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross | cross | glassy | cross | cross-on | glassy | cross | glassy | glassy | glassy | glassy | cross-on | cross-on | cross | on | glassy | cross-on | cross | cross |
High Tide | 5:08PM1.43m | 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 | 10:25AM0.20m | 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 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — |
 | — | 6:17 | — | — | 6:16 | — | — | 6:15 | — | — | 6:14 | — | — | 6:13 | — | — | 6:10 | — | — | 6:09 | — |
mm | 2 | 8 | 4 | 2 | — | 1 | — | 1 | — | — | — | 2 | 1 | 1 | 3 | — | — | 2 | 1 | 1 | — |
Temp °C | 29 | 27 | 26 | 28 | 29 | 27 | 27 | 27 | 25 | 24 | 26 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 29 | 26 |
Feels °C | 35 | 31 | 31 | 32 | 33 | 31 | 29 | 31 | 29 | 28 | 31 | 32 | 32 | 32 | 30 | 31 | 31 | 31 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | S 6 | S 10 | S 10 | S 9 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 8 | SE 10 | SSW 7 | SSW 7 | S 11 | S 10 | S 11 | S 10 | S 10 | S 10 | S 11 | S 10 | S 10 |
| kJ | 23 | 54 | 88 | 74 | 49 | 33 | 20 | 12 | 12 | 25 | 18 | 17 | 63 | 133 | 188 | 167 | 161 | 179 | 231 | 244 | 259 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SE 10 | SE 9 | SE 9 | SSE 9 | SE 11 | SE 11 | SE 11 | SSW 8 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | ESE 12 | E 11 | E 11 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 55 | 38 | 24 | 23 | 22 | 9 | 30 | 31 | 29 | 11 | 27 | 16 | 15 | 14 | 23 | 46 | 65 | 62 | 35 | 35 | 19 |
Swell 3 Height (m) Direction Period (s) | S 11 | ESE 10 | ESE 10 | E 12 | ESE 9 | SE 13 | SE 9 | ESE 9 | ESE 10 | — | SE 9 | S 13 | SSW 7 | ESE 13 | ESE 12 | SE 10 | SE 10 | SE 10 | SE 10 | SSE 10 | SE 11 |
| kJ | 58 | 11 | 18 | 11 | 8 | 7 | 3 | 9 | 9 | — | 3 | 3 | 11 | 17 | 30 | 16 | 16 | 15 | 17 | 11 | 18 |
Wind waves Height (m) Direction Period (s) | SSW 5 | SSW 6 | SSW 6 | SW 6 | — | — | — | NE 3 | — | — | — | SSW 5 | NE 2 | NE 3 | E 4 | NE 3 | NE 6 | — | — | — | — |
| kJ | 33 | 36 | 32 | 73 | — | — | — | 2 | — | — | — | 17 | 2 | 1 | 8 | 2 | 1 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 53 | 0 | 67 | 53 | 31 | 58 | 433 | 58 | 82 | 50 | 50 | 82 | 0 | 110 | 58 | 22 | 34 | 0 | 24 | 857 | 1191 |
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.
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