
Surf Forecasts:
Sakawa River surf forecast from 9 Jul 2026:
- Best quality surf: Friday 10 Jul, 6AM (local time) - 6ft (1.8m), 14s period, S swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 3PM (local time) - 7.5ft (2.3m), 16s period, S swell with 2,701 kJ wave energy.
- Next surfable swell (1★+): Friday 10 Jul, 6AM (local time) - 6ft (1.8m), 14s 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 Friday (Jul 10) at 6AM. The primary swell is predicted to be 1.8m and 14s period with a secondary swell of 1.0m and 18s. 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 2.3m 16s and forecast to arrive on Friday (Jul 10) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Wednesday (Jul 15) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 10th Jul) | 6ft (1.8m) 14s |
| Best Surf | 6AM (Fri 10th Jul) | 6ft (1.8m) 14s |
| Most Powerful | 3PM (Fri 10th Jul) | 7.5ft (2.3m) 16s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
G’day, Rusty here. Let’s have a look at what’s coming up for the Sakawa River.
The good news is that we’ve got a decent pulse of long-period swell rolling in from the south, but it’s a short-lived window before things go flat. The standout moment is Sunday afternoon, 12 July. The swell, coming from the SSW, will be around 5ft with a very long 15-second period, and with a light WSW breeze turning cross-offshore, it’s going to be clean. The combined wave energy is moderate at 857, but that long period means the waves will have real shape and power. This is a river mouth setup, so that long-period groundswell will wrap in nicely and offer some proper lines. The water temperature is about average for this time of year, nothing unusual there. The break is fairly consistent and exposes well to that southerly energy, but be aware: crowds are possible, especially when it’s this good. For intermediates, this is your session.
Friday the 10th and Saturday the 11th offer bigger swell, but it’s messy. Friday morning has 6ft south swell with a 14-second period and a light SSE onshore wind. It’s clean enough in the air, but the wave comment flags marginal conditions, and with the swell pushing over 5ft, it’s getting a bit much for beginners. Friday afternoon turns choppy with 8ft south swell and 16-second period, but the cross-onshore wind ruins it. Saturday is much the same—big, long-period swell, but cross-shore and cross-onshore winds keep it from shaping up. The combined energy is strong (over 2000), but the quality isn’t there.
Sunday morning, 12 July, sees a drop in swell to 5ft and a risk of thunderstorms, so not ideal. Then Sunday afternoon—that’s the pick, as I said.
From Monday the 13th onward, it really fades. Monday morning drops to 2ft and a short 10-second period, and although the wind is light and cross-offshore, the energy is weak (195). After that, it’s a long flat spell. Tuesday through Friday of that first week are all tiny—1ft to 2ft—with poor conditions and light cross-onshore breezes. The combined energy falls below 100 by the middle of the week, and it’s not worth paddling out.
Then we hit a real dry spell. From about the 17th of July right through to the 25th, the surf is tiny—mostly knee-high or less, with weak, short-period swell and onshore or cross-onshore winds. The wave comments are all “poor surf conditions,” and the energy is in the low double digits or just above. There’s no standout in that stretch. The only flicker of hope comes right at the end—Saturday the 25th morning shows 3ft from the SSW with a 13-second period, but it’s still rated marginal, and the wind is light cross-onshore. Combined energy is 461, so moderate, but it’s not clean enough to get excited about.
Bottom line: if you want waves, make Sunday the 12th your priority. After that, it’s a long, flat grind for nearly two weeks. At a river break like this, it tends to be feast or famine, so don’t hold your breath for a sudden change—forecasts can turn, but right now it’s slim pickings.
Stay frothy,
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat night. Warm (max 27°C on Fri morning, min 23°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 28°C on Wed morning, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thu 16 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | S 15 | S 14 | S 16 | S 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 13 | S 10 | SSW 12 | SSW 11 | SSW 11 | S 10 | S 10 | S 10 | S 9 | ESE 9 | SE 8 | ESE 8 |
Wave Graph | |||||||||||||||||||||
1689 | 1431 | 2701 | 2447 | 2133 | 2244 | 1591 | 1261 | 822 | 402 | 96 | 140 | 130 | 91 | 48 | 71 | 46 | 60 | 30 | 57 | 41 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-on | cross-off | cross | cross-on | cross-off | cross | cross-off | glassy | cross-off | glassy | glassy | glassy | cross-on | cross | cross-on | cross-on | cross-off | cross-on | cross-on |
High Tide | 11:05PM1.37m | 2:22PM1.17m | 00:00AM1.38m | 3:42PM1.29m | 1:04AM1.41m | 4:37PM1.39m | 2:07AM1.45m | 5:21PM1.45m | 3:07AM1.51m | 5:59PM1.48m | 4:02AM1.56m | 6:33PM1.48m | 4:55AM1.57m | ||||||||
Low Tide | 6:49AM0.38m | 6:20PM1.05m | 7:55AM0.23m | 7:58PM1.11m | 8:54AM0.09m | 9:12PM1.12m | 9:48AM-0.02m | 10:07PM1.09m | 10:37AM-0.09m | 10:53PM1.03m | 11:23AM-0.09m | 11:35PM0.95m | 12:05PM-0.03m | ||||||||
— | 4:35 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:39 | — | — | 4:39 | — | |
7:00 | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — | — | 6:59 | — | — | 6:58 | — | — | 6:58 | |
mm | — | — | — | — | — | — | 2 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 27 | 27 | 24 | 26 | 27 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 27 | 27 | 25 | 28 | 28 | 25 | 28 | 28 |
Feels °C | 27 | 29 | 29 | 26 | 28 | 29 | 27 | 29 | 28 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 28 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | S 15 | S 14 | S 16 | S 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 13 | S 10 | SSW 12 | SSW 11 | SSW 11 | S 10 | S 10 | S 10 | ESE 9 | ESE 9 | SE 8 | ESE 8 |
1689 | 1431 | 2701 | 2447 | 2133 | 2244 | 1591 | 1261 | 822 | 402 | 96 | 140 | 130 | 91 | 48 | 71 | 46 | 15 | 30 | 57 | 41 | |
Swell 2 Height (m) Direction Period (s) | E 9 | SSW 18 | ESE 10 | E 10 | ESE 10 | SSE 9 | SE 10 | SE 10 | SE 11 | SE 10 | SW 13 | SW 13 | SE 12 | SE 10 | SE 12 | ESE 10 | ESE 10 | SE 10 | SSW 9 | SSW 8 | SE 10 |
55 | 790 | 100 | 8 | 9 | 58 | 26 | 34 | 29 | 15 | 83 | 42 | 22 | 23 | 35 | 39 | 38 | 14 | 16 | 7 | 16 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | E 9 | E 9 | SE 10 | E 9 | E 9 | SE 10 | SE 10 | ESE 6 | SE 12 | SW 11 | S 15 | S 14 | S 14 | SSE 9 | SE 9 | SE 10 |
— | — | — | — | — | 43 | 7 | 28 | 6 | 6 | 16 | 16 | 3 | 6 | 19 | 4 | 4 | 4 | 8 | 3 | 16 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 3 | — | — | — | — | — | — | — | S 3 | WSW 2 | SW 3 | S 9 | SSW 3 | SW 3 | S 3 |
— | — | — | — | — | — | 8 | — | — | — | — | — | — | — | 1 | 1 | 2 | 60 | 3 | 2 | 8 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 53 | 108 | 0 | 24 | 114 | 0 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 58 | 53 | 53 | 68 | 67 | 67 | 114 |
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.











