Surf Forecasts:
Sakawa River surf forecast from 5 Sep 2026:
- Best quality surf: Monday 7 Sep, 12PM (local time) - 11ft (3.5m), 10s period, SSE swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 3PM (local time) - 11ft (3.5m), 10s period, S swell with 2,245 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 6AM (local time) - 8ft (2.5m), 10s period with SSE 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 (Sep 07) at 6AM. The primary swell is predicted to be 2.5m and 10s period with a secondary swell of 0.2m and 11s. Another secondary swell of 0.2m and 11s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Sakawa River in the next 16 days are 3.5m 10s and forecast to arrive on Monday (Sep 07) at 3PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Sunday (Sep 06) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 7th Sep) | 8ft (2.5m) 10s |
| Best Surf | 12PM (Mon 7th Sep) | 11ft (3.5m) 10s |
| Most Powerful | 3PM (Mon 7th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
Right, Rusty here. Let's cut through the noise and see what's cooking.
Don't get too excited for the next few days, it's flat and messy. We've got a slow burn until things finally turn on next week.
The main event is Monday the 7th of September. We're looking at a proper pulse of S swell hitting about 8ft, with a wave energy reading of 1257, and the wind is forecast to be dead glassy. That's a nice groundswell with a 10-second period, giving it some real push. For the Sakawa River, this is a solid window. The water's at 83°, which is a touch warmer than usual, so leave the rubber at home. Just a heads up, 8ft is solid, so this is one for the intermediates and above.
That glassy vibe hangs around into Tuesday the 8th for the morning session with a still robust 6ft of SSE swell, and a moderate energy of 853. That's another top-notch window.
Beyond the 9th, the swell drops off a cliff. We're into small, weak surf and unfriendly winds right through the second week. So your window is really that one-day hit from Monday the 7th through the morning of Tuesday the 9th. After that, expect a solid week of nothing worth paddling for.
Get on it when it arrives. This one's worth a little schedule shuffle.
- Rusty
Short Range ForecastHeavy rain (total 192mm), heaviest during Sun night. Warm (max 25°C on Mon night, min 21°C on Sat night). Winds decreasing (fresh winds from the N on Sun night, calm by Mon morning). | Days 4-6 Weather SummaryHeavy rain (total 126mm), heaviest during Tue night. Warm (max 26°C on Wed morning, min 18°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 9 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | SE 8 | SSE 10 | S 10 | SSE 10 | SSE 10 | SSE 9 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 42 | 25 | 38 | 61 | 89 | 458 | 1245 | 2245 | 1086 | 692 | 506 | 1087 | 1281 | 1098 | 476 | 225 | 119 | 47 | 31 | 18 | 18 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross | glassy | cross-off | glassy | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:45PM1.32m | 3:36PM1.25m | 10:48PM1.25m | 3:45PM1.33m | 1:09AM1.28m | 4:04PM1.39m | 2:29AM1.38m | 4:25PM1.43m | 3:26AM1.47m | 4:45PM1.46m | 4:15AM1.53m | 5:05PM1.48m | |||||||||
Low Tide | 6:11AM0.37m | 7:15PM1.21m | 7:42AM0.29m | 8:41PM1.09m | 8:43AM0.22m | 9:20PM0.95m | 9:30AM0.17m | 9:53PM0.79m | 10:09AM0.18m | 10:25PM0.63m | 10:43AM0.24m | 10:57PM0.49m | |||||||||
 |  |  | |  |  | | |  | |  | | |  | | | | | | |  | |
 | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — |
 | — | 6:06 | — | — | 6:04 | — | — | 6:02 | — | — | 6:00 | — | — | 6:00 | — | — | 5:59 | — | — | 5:57 | — |
mm | 3 | — | — | — | 14 | 106 | 33 | 32 | 4 | 4 | 6 | 34 | 13 | 17 | 27 | 17 | 6 | 2 | 2 | 2 | — |
Temp °C | 22 | 23 | 22 | 22 | 21 | 22 | 24 | 24 | 25 | 25 | 24 | 24 | 26 | 26 | 22 | 21 | 21 | 20 | 18 | 20 | 21 |
Feels °C | 24 | 25 | 23 | 19 | 19 | 21 | 29 | 29 | 30 | 29 | 27 | 29 | 30 | 31 | 23 | 21 | 22 | 19 | 17 | 21 | 23 |
Swell 1 Height (m) Direction Period (s) | S 9 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | SE 8 | ESE 11 | E 8 | SSE 10 | SSE 10 | SSE 9 | S 9 | S 10 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 |
| kJ | 42 | 25 | 38 | 61 | 89 | 299 | 12 | 115 | 1086 | 692 | 506 | 484 | 821 | 845 | 476 | 225 | 119 | 47 | 31 | 18 | 18 |
Swell 2 Height (m) Direction Period (s) | ESE 7 | SSW 8 | SSW 8 | SSW 8 | SSE 8 | S 10 | — | — | E 8 | SSW 11 | SSW 10 | E 18 | SE 12 | E 16 | E 16 | ESE 11 | ESE 11 | ESE 8 | ESE 6 | SE 6 | ESE 10 |
| kJ | 17 | 23 | 14 | 6 | 22 | 262 | — | — | 66 | 123 | 116 | 6 | 6 | 5 | 5 | 11 | 11 | 14 | 7 | 8 | 10 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 8 | SE 8 | SE 12 | — | NE 5 | — | — | — | E 9 | E 9 | E 18 | E 17 | — | E 8 | E 15 | E 8 | ESE 5 | ESE 10 | ESE 10 | ESE 6 |
| kJ | 12 | 11 | 3 | 6 | — | 35 | — | — | — | 38 | 27 | 6 | 6 | — | 6 | 4 | 5 | 5 | 10 | 10 | 3 |
Wind waves Height (m) Direction Period (s) | ENE 3 | ENE 3 | NE 3 | NNE 4 | NE 5 | SE 8 | SSE 10 | S 10 | — | — | — | S 10 | S 10 | S 9 | NE 4 | NE 4 | NE 4 | NE 4 | NNE 4 | NE 4 | NE 4 |
| kJ | 3 | 3 | 7 | 52 | 75 | 458 | 1245 | 2245 | — | — | — | 1087 | 1281 | 1098 | 34 | 24 | 24 | 24 | 15 | 6 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 66 | 450 | 515 | 515 | 40 | 0 | 9 | 9 | 0 | 0 | 0 | 9 | 9 | 30 | 515 | 0 | 249 | 111 | 100 | 67 |
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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