Surf Forecasts:
Sakawa River surf forecast from 20 Jul 2026:
- Best quality surf: Monday 27 Jul, 6PM (local time) - 3ft (0.9m), 10s period, SSW swell with glassy winds.
- Most powerful swell: Monday 27 Jul, 9PM (local time) - 3.5ft (1.0m), 11s period, SSW swell with 240 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 6AM (local time) - 1ft (0.3m), 18s period with SE 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 24) at 6AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.3m and 8s 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 11s and forecast to arrive on Monday (Jul 27) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Jul 21) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Best Surf | 6PM (Mon 27th Jul) | 3ft (0.9m) 10s |
| Most Powerful | 9PM (Mon 27th Jul) | 3.5ft (1.0m) 11s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what’s happening for the next couple of weeks.
Honestly, it’s a pretty slow start. We’re looking at a long stretch of nothing much to get excited about. From the start of the period through most of July, the conditions are just not there. The swell is tiny, mostly under 2ft, and the wind is nearly always cross-onshore, which messes up any chance of a clean wave. The first real chance to even get a surfable wave doesn’t show up until Monday morning, July 27th.
So, for the first week, it’s a waiting game. The water temperature at the Sakawa River is around 79°, which is pretty much normal for this time of year, so at least it’s nice for a float.
The first glimmer of hope comes on Monday, July 27th, in the morning. The Sakawa River has a 2ft swell from the S, with a period of 11 seconds, and it’s glassy. That’s a rare window of clean conditions with no wind. The combined energy is still modest at 139 (moderate), but it’s something. It’s a river break, so it can get a bit straight with the longer period, but for a paddle on a quiet morning, it’s your best bet.
The real standout, though, happens later on Friday, July 31st, in the morning. The Sakawa River is showing 4ft of swell from the SW, and it’s glassy again. The swell period is a short 7 seconds, which is more of a windswell, but the energy is up at 293 (moderate to strong). The wind is light and glassy, so the surface will be clean. This is the best-looking window in the whole 16-day run. The swell is a bit much for total beginners at over 3ft, and the short period means it’ll be a bit crumbly, but for an intermediate surfer, that’s a fun morning. The break is ‘fairly consistent’ and ‘sometimes’ has crowds, so expect a few others out, but with the glassy conditions, it’ll be worth it.
After that, it tails off again. The energy drops back into the double digits, and the wind goes back to being cross-onshore. The rest of the first week of August looks pretty poor, with tiny swell and messy wind. You’d be waiting a long time for another decent wave.
So, to sum it up: the first week is a washout. The only real standout is the morning of Friday, July 31st at the Sakawa River. Get on it if you can, because it’s the only good session in the whole 16-day outlook.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Tue afternoon. Warm (max 31°C on Tue morning, min 27°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 83mm), heaviest during Fri night. Warm (max 31°C on Thu afternoon, min 24°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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) | E 9 | SE 8 | ESE 11 | ESE 11 | ESE 11 | SW 5 | ESE 11 | SSE 11 | SE 10 | SE 10 | SE 18 | SE 18 | SE 17 | SE 16 | SE 16 | SE 16 | SE 15 | SE 15 | SE 14 | SE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 13 | 11 | 12 | 11 | 11 | 25 | 11 | 11 | 16 | 16 | 49 | 49 | 45 | 41 | 40 | 39 | 35 | 41 | 74 | 39 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | glassy | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross |
High Tide | 8:47PM1.39m | 9:26AM1.10m | 9:12PM1.37m | 10:59AM1.02m | 9:42PM1.35m | 1:52PM1.02m | 10:23PM1.31m | 4:25PM1.11m | 11:26PM1.28m | 4:24PM1.19m | 00:48AM1.28m | 4:44PM1.26m | 1:59AM1.31m | |||||||
Low Tide | 3:26AM0.59m | 2:44PM0.76m | 4:27AM0.55m | 3:05PM0.90m | 5:40AM0.52m | 3:15PM1.02m | 6:57AM0.47m | 5:07PM1.11m | 8:03AM0.40m | 7:57PM1.13m | 8:56AM0.32m | 9:09PM1.09m | ||||||||
 |  | |  |  | | | | | | | | |  |  | | | | |  | |
 | — | — | 4:43 | — | — | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — |
 | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — |
mm | — | — | — | 2 | 2 | — | 1 | — | — | 3 | 5 | 3 | 8 | 51 | 1 | 5 | 6 | 1 | 1 | — |
Temp °C | 30 | 28 | 31 | 31 | 28 | 31 | 31 | 28 | 31 | 31 | 28 | 29 | 29 | 25 | 27 | 28 | 25 | 26 | 27 | 26 |
Feels °C | 34 | 32 | 36 | 36 | 33 | 36 | 36 | 33 | 36 | 36 | 34 | 34 | 34 | 30 | 31 | 32 | 30 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 8 | ESE 11 | ESE 11 | SSE 8 | SSW 5 | ESE 11 | SSW 6 | SSW 6 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SSE 4 |
| kJ | 8 | 11 | 12 | 11 | 6 | 5 | 11 | 4 | 7 | 16 | 25 | 23 | 18 | 40 | 35 | 35 | 35 | 41 | 40 | 11 |
Swell 2 Height (m) Direction Period (s) | E 9 | ESE 11 | SSE 8 | SSE 8 | ESE 11 | ESE 11 | SE 7 | SSE 11 | SE 10 | S 5 | S 4 | S 7 | SSE 9 | SE 16 | SE 16 | SE 16 | SE 15 | SE 15 | SE 14 | SE 10 |
| kJ | 13 | 11 | 6 | 6 | 11 | 11 | 2 | 11 | 16 | 4 | 4 | 4 | 8 | 41 | 40 | 39 | 35 | 34 | 74 | 39 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | E 8 | E 11 | E 11 | E 10 | SSE 8 | E 10 | S 4 | E 10 | SSW 6 | SE 18 | SE 18 | SE 17 | SSW 7 | S 7 | S 7 | S 8 | S 8 | S 10 | SSW 9 |
| kJ | 12 | 5 | 10 | 9 | 7 | 6 | 2 | 1 | 8 | 4 | 49 | 49 | 45 | 5 | 1 | 1 | 5 | 5 | 8 | 29 |
Wind waves Height (m) Direction Period (s) | SSW 3 | SW 3 | SSW 3 | SSW 3 | SW 4 | SW 5 | SSW 5 | SW 3 | — | SSW 6 | — | — | S 7 | ESE 3 | SE 4 | SE 4 | SE 4 | SSE 4 | SSE 4 | S 4 |
| kJ | 1 | 5 | 1 | 4 | 6 | 25 | 5 | 4 | — | 13 | — | — | 4 | 4 | 3 | 5 | 2 | 3 | 10 | 13 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 115 | 68 | 68 | 1391 | 68 | 68 | 114 | 68 | 68 | 68 | 68 | 73 | 73 | 0 | 73 | 50 | 58 | 50 | 53 | 68 |
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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