Surf Forecasts:
Sakawa River surf forecast from 17 Jul 2026:
- Best quality surf: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with glassy winds.
- Most powerful swell: Saturday 18 Jul, 12PM (local time) - 2ft (0.6m), 9s period, SE swell with 50 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 12AM (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 12AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.4m and 4s. Another secondary swell of 0.4m and 10s is also forecast. Another secondary swell of 0.5m and 4s is also forecast. 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 0.6m 9s and forecast to arrive on Saturday (Jul 18) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Jul 20) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Best Surf | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Most Powerful | 12PM (Sat 18th Jul) | 2ft (0.6m) 9s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
### Imperial
Alright, let’s be straight with you. The next week and a bit is a total write-off. We’re looking at tiny, weak swells and poor conditions. From Saturday the 18th right through to the 26th, you’re not going to find anything rideable. The waves are stuck between 0.7 ft and 2 ft with hardly any energy behind them (the combined energy is mostly in the double digits, well under 100). The wind is mostly cross-onshore, and even the glassy mornings on the 20th and 21st can’t save it because the swell is just too small. It’s a frustrating gap that lasts over a week.
We finally get a pulse of life around the 27th of July. The swell starts to build, but it’s still messy. By the 28th, we’re seeing 6 ft to 7 ft swell from the SSE, but the wind is mostly cross-onshore, and the energy is ramping up (882 in the morning, 1452 in the afternoon). It’s still a bit raw for a good paddle.
The real standout, the one you’ve been waiting for, is the morning of Friday, the 31st of July. We get a solid 8 ft swell from the S, with a period of 14 seconds – that’s a proper groundswell. The wind is coming from the NNE, which is a nice cross-offshore breeze, keeping things clean. The combined energy is a strong 2230. This is for experienced surfers only, as it’s plenty powerful. The long period will mean longer lulls between sets, making the paddle out easier, but it’ll be a freight train when it hits.
Then, on the morning of Saturday, the 1st of August, it drops a bit to 4 ft from the S, but the wind goes glassy. It’s a much more manageable size, perfect for a fun session. The water temperature is about average for the time of year, nothing unusual.
So, your best bet is the 31st of July morning for the big stuff, or the 1st of August morning for something cleaner and smaller. After that, it looks like it’s fading again.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Mon afternoon, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Thu night. Warm (max 31°C on Wed morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | SE 9 | SE 8 | ESE 10 | ESE 10 | SE 8 | SE 7 | E 9 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | SSE 11 | SE 10 | SE 10 | SE 18 | SE 18 | SE 17 | SE 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 31 | 35 | 31 | 31 | 21 | 19 | 14 | 12 | 23 | 12 | 12 | 11 | 11 | 11 | 11 | 16 | 16 | 49 | 49 | 45 | 41 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | cross-on | cross-on | cross-off | glassy | cross-on | off | cross-on | cross-on | glassy | glassy | cross-on | glassy |
High Tide | 7:58PM1.42m | 7:26AM1.35m | 8:23PM1.41m | 8:21AM1.23m | 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 | ||||||||
Low Tide | 1:19PM0.24m | 1:45AM0.69m | 1:50PM0.42m | 2:33AM0.63m | 2:19PM0.59m | 3:26AM0.59m | 2:44PM0.76m | 4:27AM0.55m | 3:05PM0.90m | 5:40AM0.52m | 3:15PM1.02m | 6:57AM0.47m | 5:07PM1.11m | ||||||||
 |  |  | | |  | | | |  |  |  | | | | | | | | | | |
 | 4:41 | — | — | 4:41 | — | — | 4:41 | — | — | 4:43 | — | — | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — |
 | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | — | 1 | 2 | — | 2 | 6 | 1 | 2 | 3 |
Temp °C | 27 | 28 | 26 | 28 | 28 | 27 | 29 | 30 | 27 | 30 | 30 | 28 | 31 | 31 | 29 | 29 | 30 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 31 | 30 | 31 | 31 | 31 | 34 | 34 | 31 | 35 | 34 | 33 | 35 | 36 | 34 | 33 | 34 | 33 | 33 | 32 | 33 |
Swell 1 Height (m) Direction Period (s) | SE 4 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 | SE 7 | SE 8 | SSW 4 | ESE 11 | SSE 8 | S 4 | ESE 11 | S 4 | SSW 6 | SE 10 | SE 4 | SE 9 | SE 11 | SE 11 |
| kJ | 5 | 35 | 31 | 29 | 21 | 19 | 8 | 7 | 11 | 3 | 12 | 6 | 1 | 11 | 2 | 7 | 16 | 3 | 23 | 18 | 40 |
Swell 2 Height (m) Direction Period (s) | SE 9 | ESE 8 | ESE 10 | ESE 10 | ESE 9 | E 9 | E 9 | E 8 | ESE 11 | ESE 11 | SSE 8 | ESE 11 | ESE 11 | SE 7 | SSE 11 | SE 10 | E 10 | SE 10 | ESE 4 | SE 17 | SE 16 |
| kJ | 31 | 14 | 31 | 31 | 17 | 15 | 14 | 6 | 23 | 12 | 6 | 11 | 11 | 2 | 11 | 16 | 7 | 25 | 2 | 45 | 41 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | S 9 | S 8 | S 8 | SE 12 | S 8 | ESE 11 | ESE 11 | E 8 | SE 6 | E 11 | E 9 | SSE 7 | E 10 | SE 8 | E 10 | E 5 | SE 18 | SE 18 | SSE 9 | ESE 4 |
| kJ | 14 | 2 | 5 | 5 | 6 | 5 | 13 | 12 | 5 | 1 | 9 | 7 | 5 | 2 | 2 | 8 | 2 | 49 | 49 | 8 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | S 3 | SW 3 | SSW 3 | SSW 3 | SW 3 | — | SSW 3 | SW 3 | — | S 5 | — | ENE 2 | S 5 | E 4 | E 5 | SE 5 | — |
| kJ | — | — | — | — | 8 | 2 | 1 | 6 | 7 | — | 4 | 4 | — | 4 | — | 1 | 5 | 9 | 7 | 4 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 114 | 58 | 58 | 58 | 68 | 68 | 67 | 67 | 115 | 68 | 68 | 497 | 68 | 68 | 68 | 89 | 73 | 82 | 68 | 96 | 96 |
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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